### Ellipse Fourth Method Case 1

Draftsman's fourth method for drawing an ellipse, case 1

### Ellipse Third Method

Draftsman's third method for drawing an ellipse

### Conjugate Diameters of an Ellipse

Illustration showing that if one diameter is conjugate to a second, the second is conjugate to the first.

### Construction of an Ellipse

Illustration of half of an ellipse and its auxiliary circle used to construct an ellipse by points,…

### Focal Radii of an Ellipse

Illustration of half of an ellipse. "If d denotes the abscissa of a point of an ellipse, r and r' its…

### Line Bisecting Angle Between Focal Radii on Ellipse

Illustration of half of an ellipse. "If through a point P of an ellipse a line is drawn bisecting the…

### Ordinate and Major Axis of Ellipse

Illustration of half of an ellipse. The square of the ordinate of a point in an ellipse is to the product…

### Parallel Tangents to an Ellipse

Illustration showing that tangents drawn at the ends of any diameter are parallel to each other.

### Point Distances to Foci on Ellipse

Illustration of half of an ellipse. "The sum of the distances of any point from the foci of an ellipse…

### Tangent From External Point to an Ellipse

Illustration of how to draw a tangent to an ellipse from an external point.

### Tangent to an Ellipse

Diagram an ellipse with a tangent line that illustrates "A line through a point on the ellipse and bisecting…

### Tangents to an Ellipse

Illustration showing the tangents drawn at two corresponding points of an ellipse and its auxiliary…

### Construction Of An Equilateral Triangle Inscribed In A Circle

An illustration showing how to construct an equilateral triangle inscribed in a circle. "With the radius…

### Forearm Bones

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

### Forearm Bones

Transverse section through the bones of the forearm (radius and ulna), taken at about the middle of…

### Back View of the Bones of the Forearm

Front view of the bones of the forearm

### Bones and Ligaments of Forearm

Bones of the right forearm,with their ligaments; volar aspect.

### Cross Section One Inch above the Styloid Process of the Forearm

Section one inch above the styloid process of the right radius.

### Cross Section Three Inches above the Styloid Process of the Forearm

Section three inches above the styloid process of the right radius.

### Cross Section Through the Styloid Process of the Forearm

Section through the styloid process of the right radius.

### Cross Section Two Inches above the Styloid Process of the Forearm

Section two inches above the styloid process of the right radius.

### Dorsal View of the Bones of the Forearm

The bones of the right forearm, dorsal view.

### Front View of the Bones of the Forearm

Front view of the bones of the forearm

### Muscles and Nerves of the Forearm

The muscles and nerves on the front of the forearm and hand. The pronator radii teres, flexor carpi…

### Section Across Forearm

Section across the forearm in the middle third. Labels: A, pronator radii teres; B, flexor carpi radialis;…

### Forearm, Section of

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones,…

### Ventral View of the Bones of the Forearm

The bones of the right forearm, ventral view.

### Geometry

Two students drawing geometrical shapes on the chalkboard. A student is also using a scale while students…

### Guiding Needle Point of Compass to Little Finger

The little finger on the left hand can guide the needle point of the compass to the center.

### Hand Ligaments

A anterior view of the ligaments of the wrist and hand.

### Hand Ligaments

A posterior view of the ligaments of the wrist and hand.

### Construction Of A Hexagon In A Circle

An illustration showing how to construct a hexagon in a given circle. "The radius of the circle is equal…

### Tangent to a Hyperbola

Diagram part of a hyperbola with a tangent line that illustrates "A line through a point on the hyperbola…

### Elbow Joint

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments…

### Left Scaphoid

A view of the left scaphoid seen from behind.

### Left Scaphoid

A view of the left scaphoid seen from in front.

### Left Semilunar

A view of the left semilunar from the external surface.

### Noctule Bat

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first…

### Construction Of A Pentagon Inscribed In A Circle

An illustration showing how to construct a pentagon inscribed in a circle. "Draw the diameter AB, and…

### Construction Of A Pentagon On A Line

An illustration showing how to construct a pentagon on a given line. "From B erect BC perpendicular…

### Regular Pentagon With Circle Inscribed

Illustration showing a circle inscribed in a regular pentagon. Or, a regular pentagon circumscribed…

### Circle With 2 Perpendicular Diameters

Illustration of a circle with center O and diameters AB and CD perpendicular to each other.

### Construction of Radii of a Circle

Illustration used to draw lines which are radii of a circle where the center is inaccessible.

### Radius

The plan of development of the radius for three centuries.

### Radius

The radial bone in the human arm.

### Radius

Anterior view of radius (bone of the arm) of the right side. Labels: 1, cylindrical head; 2, surface…

### Radius

The radius, a bone of the arm.

### Radius and Ulna

An anterior view of the radius and ulna.

### Radius and Ulna

A posterior view of the radius and ulna.

### Radius from Before

Right radius from before.

### Radius from Behind

Right radius from behind.

### Broken Radius

"When a bone is broken, blood trickles out between the injured parts, and afterwards gives place to…

### Carpal Articular Surface of the Radius

Carpal articular surface of the radius, and triangular fibro cartilage of the wrist.

### Colle's Fraction of the Radius

Showing the situation of Colle's fracture of the radius, with fracture of the styloid of the ulna. The…

### Fractured Radius

Fracture of the shaft of the radius.

### Fractured Radius

Fracture of the lower end of the radius.

### Inner Aspect of Radius

Right radius, inner aspect.

### Orbicular Ligament of the Radius

Orbicular ligament of the radius.

### Ring Made of Concentric Circles

Illustration of ring (small circle in larger concentric circle).

### Ring With Piece Cut Out

Illustration of ring (small circle in larger concentric circle) with piece cut out.