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Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Increments And Axes Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Some Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Some Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and increments from -10 To 10 labeled by 5s.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 5s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments from -10 To 10 labeled by 5s.

-10 To 10 Coordinate Grid With Increments Labeled By 5s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with increments…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with axes and some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Axes And Increments Labeled By 10s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with axes…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some increments from -10 To 10 labeled.

-10 To 10 Coordinate Grid With Increments Labeled By 10s And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with some…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the x- and y-axes and even increments from -10 to 10 labeled.

-10 To 10 Coordinate Grid With Axes And Even Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with the…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even increments from -10 to 10 labeled.

-10 To 10 Coordinate Grid With Even Increments Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with even…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither axis is labeled.

Blank Coordinate Grid With Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system. Neither…

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with both axes labeled.

Coordinate Grid With Axes Labeled And Grid Lines Shown

Illustration of an xy grid/graph with grid lines shown. It is the Cartesian coordinate system with both…

Isometric of a prism with a semicircular top.

Prism With Semicircular Top

Isometric of a prism with a semicircular top.

Illustration of a plan and elevation of an oblique pentagonal pyramid.

Oblique Pentagonal Pyramid

Illustration of a plan and elevation of an oblique pentagonal pyramid.

Illustration of the isometric of an oblique pentagonal pyramid.

Isometric of Oblique Pentagonal Pyramid

Illustration of the isometric of an oblique pentagonal pyramid.

Illustration of the isometric of a skeleton of a box.

Isometric Of A Box

Illustration of the isometric of a skeleton of a box.

Illustration of the isometric of a carpenter's bench.

Isometric Of A Carpenter's Bench

Illustration of the isometric of a carpenter's bench.

Illustration of stairs; 3-dimensional view of 4 steps. The staircase can be created by combining/stacking various sizes of rectangular solids.

Isometric of Stairs

Illustration of stairs; 3-dimensional view of 4 steps. The staircase can be created by combining/stacking…

Illustration of the isometric of a hollow cylinder.

Hollow Cylinder

Illustration of the isometric of a hollow cylinder.

Illustration of model created by combining non regular geometric solids.

Combination of Geometric Solids

Illustration of model created by combining non regular geometric solids.

Illustration of an oblique view of a rectangular solid/prism at 30°.

Oblique View Of Rectangular Solid

Illustration of an oblique view of a rectangular solid/prism at 30°.

Illustration of an oblique view of a rectangular solid/prism at 45°.

Oblique View Of Rectangular Solid

Illustration of an oblique view of a rectangular solid/prism at 45°.

Illustration of an oblique view of a rectangular solid/prism at 60°.

Oblique View Of Rectangular Solid

Illustration of an oblique view of a rectangular solid/prism at 60°.

Illustration of an oblique view of a hollow cylinder.

Oblique View Of Hollow Cylinder

Illustration of an oblique view of a hollow cylinder.

Illustration of an oblique view of a hollow cylinder. The portion removed from the center of the cylinder is in the shape of a rectangular prism.

Oblique View Of Hollow Cylinder

Illustration of an oblique view of a hollow cylinder. The portion removed from the center of the cylinder…

Illustration of a shaded section of a hollow cylinder viewed from the side.

Hollow Cylinder

Illustration of a shaded section of a hollow cylinder viewed from the side.

An illustration showing how to use isometric perspective. "This kind of perspective admits of scale measurements the same as any ordinary drawing, and gives a clear representation of the object. It is easily learned. All horizontal rectangular lines are drawn at an angle of 30°. All circles are ellipses of proportion, as shown."

Construction Using Isometric Perspective

An illustration showing how to use isometric perspective. "This kind of perspective admits of scale…

An illustration of an elliptical prism.

Elliptical Prism

An illustration of an elliptical prism.

In military affairs, a narrow ditch or trench by which approach is made to a fortress or designed place when within range of fire. This is sap on a rectangular plan.

Rectangular Sap

In military affairs, a narrow ditch or trench by which approach is made to a fortress or designed place…

"Streamlet branchings of the abnormal type found in the area in and about the Pomperaug Valley. a and i, streamlets controlled by two sets or airs of fault planes. b and c, streamlets preponderantly controlled by a single series of parallel planes; d, f, and h, by a nearly rectangular system of fault planes. e and g, streamlets indicating that neighboring streamlet branchings have been controlled by the same fault plane. The side streamlets of g indicate control by a second series of faults." -Walcott, 1901

Streamlet Branchings

"Streamlet branchings of the abnormal type found in the area in and about the Pomperaug Valley. a and…

Showing different types of parallel prisms: rectangular, right triangular, acute triangular, and obtuse triangular.

Parallel Prisms

Showing different types of parallel prisms: rectangular, right triangular, acute triangular, and obtuse…

Showing different types of oblique prisms: rectangular, right triangular, acute triangular, and obtuse triangular.

Oblique Prisms

Showing different types of oblique prisms: rectangular, right triangular, acute triangular, and obtuse…

A rectangular prism with labeled sides: AAAA are the four vertical parallel corners. BBBB and CCCC are the horizontal parallel edges.

Rectangular Prism

A rectangular prism with labeled sides: AAAA are the four vertical parallel corners. BBBB and CCCC are…

Types of parallel prisms: right triangular prism, isosceles triangular prism, rectangular prism, cylinder.

Parallel Prisms

Types of parallel prisms: right triangular prism, isosceles triangular prism, rectangular prism, cylinder.

Types of oblique prisms: right triangular prism, isosceles triangular prism, rectangular prism, cylinder.

Oblique Prisms

Types of oblique prisms: right triangular prism, isosceles triangular prism, rectangular prism, cylinder.

A, B, and C show three types of triangular prisms: right, isosceles, and equilateral. When put together with rectangular prisms, they create the three basic house forms. D is a shed roof and E and F are gable roofs.

Drawing House Forms

A, B, and C show three types of triangular prisms: right, isosceles, and equilateral. When put together…

Illustration of a 5 in. by 3 in. by 4 in. rectangular solid with each cube in the solid representing one cubic inch. This can be used when explaining volume.

Volume Of A Rectangular Solid

Illustration of a 5 in. by 3 in. by 4 in. rectangular solid with each cube in the solid representing…

Illustration of a triangular prism; a prism whose bases are triangles.

Triangular Prism

Illustration of a triangular prism; a prism whose bases are triangles.

Illustration of a square prism; a prism whose bases are squares.

Square Prism

Illustration of a square prism; a prism whose bases are squares.

Illustration of a pentagonal prism showing, "If a piece of paper is fitted to cover the convex surface of a prism or a cylinder, and then unrolled, its form will be that of a rectangle, as ABCD."

Surfaces Of A Prism

Illustration of a pentagonal prism showing, "If a piece of paper is fitted to cover the convex surface…

Illustration used to show finding the volume of a triangular prism.

Volume Of Triangular Prism

Illustration used to show finding the volume of a triangular prism.

Illustration used to show finding the volume of a square prism.

Volume Of Square Prism

Illustration used to show finding the volume of a square prism.

Illustration used to show finding the volume of a pentagonal prism.

Volume Of Pentagonal Prism

Illustration used to show finding the volume of a pentagonal prism.

Illustration used to show finding the volume of a pentagonal prism.

Volume Of Cylinder

Illustration used to show finding the volume of a pentagonal prism.

Illustration used to compare the volumes of a pyramid and a prism by emptying sand from the pyramid into the prism.

Comparative Volumes Of A Pyramid And Prism

Illustration used to compare the volumes of a pyramid and a prism by emptying sand from the pyramid…

Illustration of a 1 in. by 2 in. by 1 in. rectangular solid that is similar to a 2 in. by 4 in. by 2 in. rectangular solid.

Similar Rectangular Solids

Illustration of a 1 in. by 2 in. by 1 in. rectangular solid that is similar to a 2 in. by 4 in. by 2…

Various geometric solids, mostly rectangular prisms with a cylinder and a hexagonal prism.

Solids

Various geometric solids, mostly rectangular prisms with a cylinder and a hexagonal prism.

"This was the beginning of a cocoon. Each triangular blade was composed of a great number of small, thin, rectangular plates, taken from the bark of the tree."

Cocoon of Pyralis Corticalis

"This was the beginning of a cocoon. Each triangular blade was composed of a great number of small,…

"This term is applied indiscriminately to evaporators with steam-pipe, whether arranged in the form of a coil, or, as more commonly used, in a rectangular series, In some the steam is admitted through a main pipe, from which others lead off at right angles, terminating in a similar main, which receives and carries off the condensed water of all...Still another, and the most convenient plan, thought not without some objectives, consists in admitting the steam at one end of the coil allowing it to ass progressively through the whole, driving the condensed water, which it will do, though imperfectly, before it." -Commissioner, 1865

Steam-Coil Evaporator

"This term is applied indiscriminately to evaporators with steam-pipe, whether arranged in the form…

"In this mode of evaporating a variety of plans and arrangements for connivence are employed. The pans are made in the form of a shallow box, with a common sheet-iron, galvanized iron, or copper bottom, frequently with flaring sides or shores, on which the scum collects and remains until removed at the convenience of the operator. These pans are frequently made with partitions, which divide them into two or more compartments, into which the juice, as it becomes defecated and partly concentrated in one, is successively transferred to the next." -Commissioner, 1865

Intermittent evaporation process

"In this mode of evaporating a variety of plans and arrangements for connivence are employed. The pans…

"Jacobs evaporator consists of a plain rectangular shallow pan of any convenient length and width, made with a sheet metal bottom and wooden sides. The side pieces are grooved or notched on the inner faces to receive thin board partitions or divisions, extending from side to side, and separating the pan into any convenient number of compartments. These partitions rest loosely upon the bottom, allowing the juice to flow under from one division to the other, while the scum which rises to the surface as the juice moves slowly along, is held back The division boards fit loosely in the grooves in the sides, and may be changed or removed at pleasure." -Commissioner, 1865

Jacobs Pan

"Jacobs evaporator consists of a plain rectangular shallow pan of any convenient length and width, made…

Longitudinal section of enamel, treated with acid, showing disposition of ranges of enamel prisms (p, p') in striped of Schreger. Left third of figure shows alternative light(s) and dark (s') bands as seen by reflected light.

Longitudinal Section of Enamel

Longitudinal section of enamel, treated with acid, showing disposition of ranges of enamel prisms (p,…

Enamel prisms. A, Fragments and single fibers of the enamel isolated by the action of hydrochloric acid; B, Surface of a small fragment of enamel, showing the hexagonal ends of the fibers.

Enamel Prisms

Enamel prisms. A, Fragments and single fibers of the enamel isolated by the action of hydrochloric acid;…

A pendentive is a constructive device permitting the placing of a circular dome over a square room or an elliptical dome over a rectangular room. The pendentives, which are triangular segments of a sphere, taper to points at the bottom and spread at the top to establish the continuous circular or elliptical base needed for the dome. In masonry the pendentives thus receive the weight of the dome, concentrating it at the four corners where it can be received by the piers beneath.

Diagram of Pendentives

A pendentive is a constructive device permitting the placing of a circular dome over a square room or…

"Zircon, a mineral composed of of zirconium silicate, sometimes used as a gem-stone... THe mineral crystallizes in the tetragonal system, generally in combinations of square prisms and square pyramids" (Britannica, 1910).

Zircon

"Zircon, a mineral composed of of zirconium silicate, sometimes used as a gem-stone... THe mineral crystallizes…

"Zircon, a mineral composed of of zirconium silicate, sometimes used as a gem-stone... THe mineral crystallizes in the tetragonal system, generally in combinations of square prisms and square pyramids." -Britannica, 1910

Zircon

"Zircon, a mineral composed of of zirconium silicate, sometimes used as a gem-stone... THe mineral crystallizes…

An illustration of a rectangular Anglo-Saxon buckle.

Buckle

An illustration of a rectangular Anglo-Saxon buckle.

An entablature refers to the superstructure of moldings and bands which lie horizontally above columns, resting on their capitals. Entablatures are major elements of classical architecture, and are commonly divided into the architrave, frieze, and the cornice. The architrave (also called epistyle or door frame) is a moulded or ornamental band framing a rectangular opening. It is the lintel or beam that rests on the capitals of the columns.

Architrave of Entablature over Doorway at the Great Temple at Philæ

An entablature refers to the superstructure of moldings and bands which lie horizontally above columns,…

Rectangular block under the soffit of the cornice of the Greek Doric temple, which is studded with guttae. It is supposed to represent the piece of timber through which the wooden pegs were driven in order to hold the rafter in position, and it follows the sloping rake of the roof. In the Roman Doric order the mutule was horizontal, with sometimes a crowning fillet, so that it virtually fulfilled the purpose of the modillion in the Corinthian cornice.

Mutule, Side View

Rectangular block under the soffit of the cornice of the Greek Doric temple, which is studded with guttae.…

Rectangular block under the soffit of the cornice of the Greek Doric temple, which is studded with guttae. It is supposed to represent the piece of timber through which the wooden pegs were driven in order to hold the rafter in position, and it follows the sloping rake of the roof. In the Roman Doric order the mutule was horizontal, with sometimes a crowning fillet, so that it virtually fulfilled the purpose of the modillion in the Corinthian cornice.

Mutule, Front View

Rectangular block under the soffit of the cornice of the Greek Doric temple, which is studded with guttae.…