An illustration of a composite figure made up of a quadrilateral frustum and half of a cylinder. Frustum…

Cross section of concrete conduit. The diagram can be used to find volume.

"A cone is a solid whose base is a circle and whose convex surface tapers uniformly to a point." —Hallock…

Development and top completion exercise problem of the cone by dividing the base into equal parts and…

A rolled out image of a cone by dividing the base in equal parts and arcs to measure the true lengths.

Illustration of a plane parallel to the base passing through a cone (section made is a circle).

Illustration of a plane parallel to the base passing through a cone (section made is a circle).

An exercise problem to complete the top and develop, stretched out, image of the flange and hood cones…

Conjugate diameters perpendicular to each other are called, axes, and the points where they cut the…

The cone is sliced by a circle in a plane perpendicular to the axis. This can be drawn without knowledge…

The cone is sliced by a ellipse by making an angle within the plane. This can be drawn with knowing…

Diagram of a cone with spheres and cut by a plane to depict the conic sections.

Diagram of a cone with inscribed spheres and cut by various planes to depict the conic sections: circle,…

Diagram showing how to construct a conic when given the focus and the auxiliary circle. If the focus…

Diagram showing how to construct a conic when given the focus and the auxiliary circle. The focus is…

Diagram showing how to construct a conic when given the focus and the auxiliary circle. As the focus…

Illustration of of construction of an arc when the chord and height of the segment are given.

Illustration used to construct a circle when given two points that it passes through and a radius.

Illustration of a triangle with its incircle and three excircles constructed.

Illustration used to construct a common tangent when given two circles.

Illustration used to construct a circle that shall pass through a given point and cut chords of a given…

Illustration of of construction of a radius when given only a part of the circumference.

Illustration of of construction of a radius when given only a part of the circumference.

Illustration of the construction used upon a given straight line, to describe a segment of a circle…

Illustration of blueprint used by highway engineers to widen the pavement on the inside of the curve…

An illustration of finding an intersection of a cone and cylinder by either cutting the vertex of the…

"A cycloid is the curve generated by the motion of a point on the circumference of a circle rolled along…

An illustration of finding an intersection of a cone and cylinder by either cutting the vertex of the…

An exercise problem in creating a development or rolled out surface of a cylinder in a 4" by 5" drawing…

Right circular cylinder inscribed in a pentagonal prism. Or, Pentagonal prism circumscribed about a…

Illustration of a cylinder cut by a plane making an angle of 57° with the base.

Illustration of the method of finding the projection, in the form of an ellipse, of the top of a cylinder…

a solid which may be concieved as generated by the revolution of a rectangle about one of its sides.

A large cylinder containing 2 smaller congruent cylinders. The small cylinders are externally tangent…

A large cylinder containing 3 smaller congruent cylinders. The small cylinders are externally tangent…

A large cylinder containing 4 smaller congruent cylinders. The small cylinders are externally tangent…

A large cylinder containing 7 smaller congruent cylinders. The small cylinders are externally tangent…

An illustration showing how to construct a cyma, or two circle arcs that will tangent themselves, and…

Design made by drawing one large circle and then two circles that are vertically placed and internally…

Circular design made by rotating circles about a fixed point. The radii of the smaller circles is equal…

Circular design made by rotating circles about a fixed point. The radii of the smaller circles is equal…

A solid belonging to the isometric system, with 24 trapezoidal planes. It is the parallel hemihedral…

A development or rolled out image exercise problem of the dome and finding the true shape of the hip,…

When drawing the circle, the compass is turned by the handle with the thumb and forefinger in a clockwise…

Circles should be unshaded or shaded evenly with thick and thin lines, changing at about 45 degrees.

"Were the Earth's orbit a perfect circle, and her axis perpendicular to the plane of this orbit, the…

"In geometry, an angle connected with an ellipse and defined as ... angle BCL, reckoned from one determinate…

Illustration used to draw a an ellipse using string and pins by describing a circles with diameters…

Illustration used to draw a an ellipse with major axis AB and minor axis CD.

Illustration of an ellipse, whose major axis is vertical, inscribed in a circle whose diameter is equal…

Illustration showing an ellipse (and circle) as a section from a cylinder.

Illustration of 16 concentric congruent ellipses that are rotated about the center at equal intervals…