### Golden Angle

Illustration showing the golden angle. The golden angle is the smaller of two angles created by dividing…

### Bisecting an Arc

Illustration used to show how to bisect a given arc.

### Construction Of Arc

Illustration used to show how to "find an arc of a circle having a known radius, which shall be equal…

### Positive and Negative Arcs in Circles

Illustration showing arcs measured in positive and negative angles.

### Construction Of Center

Illustration used to show how to find the center when given an arc and its radius.

### Arc of Circle

Illustration of a circle with the arc aeb drawn and labeled.

### Arc of Circle

An illustration of an arc of a circle. An arc is any part of the circumference of a circle.

### Circle with Arc, Chord, Inscribed Angle, Circumscribed Polygon

Illustrations of a circle with arc, chord, inscribed angle, and circumscribed about a polygon.

### Arc and Chord in Circle

Illustration of circle with arc and chord.

### Arcs Inscribed In A Circle

A design created by inscribing 4 congruent tangent arcs in a circle.

### Circle With Chord and Tangent

Illustration of a circle showing an angle included by a tangent and a chord drawn from the point of…

### Parts of Circle

Illustration of circle with arc, chord, diameter and radius.

### Quadrant of Circle With 60 degree Arc

Illustration of circle with quadrant and 60 degree arc.

### Radius, Diameter, and Chord In A Circle

An illustration showing a circle with radius r, diameter d, and chord c.

### Sector Of Circle

Illustration of a sector of a circle. A sector is the space between an arc and two radii drawn to the…

### Sector Of A Hollow Circle

Illustration of a sector of a hollow circle. A sector is the space between an arc and two radii drawn…

### Circle With Two Intersecting Chords

Illustration of a circle with two intersecting chords within the circumference. The angle formed is…

### Circle With a Tangent Line and Chord

Illustration showing that from any point in the circumference of a circle, a chord and a tangent are…

### Unequal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are unequal,…

### Unequal Chords in Equal Circles Theorem

Illustration used to show that "In equal circles, or in the same circle, if two chords are unequal,…

### Circles With Angles Formed by Secants and Tangents

Illustration showing angles formed by two secants, two tangents, or a tangent and a secant, drawn to…

### Intersecting Lines in Circles

Illustration showing various circles and the angles formed by intersecting lines.

### Draw Circular Arc Through Three Given Points

"Join AB and BC, bisect AB and BC by perpendiculars. Their intersection will be the center of the required…

### Inking a Circle

Always draw a circle in one stroke, inclining the compass in the direction of the line and rolling the…

### Construction of Bisecting a Given Arc

Illustration of the construction used to bisect a given arc.

### Arc Exercise

Arc pattern exercise

### Model Of Geometric Proportions

An illustration showing a model that illustrates the following relationships: a:x = x:a - x, x = √(a²…

### Byzantine Interlacement Band

The Byzantine interlacement band consists of wavy arcs and curves that have an angular bend. This design…

### Romanesque Interlacement Band

The Romanesque interlacement band consists of wavy arcs and curves that have an angular bend. It is…

### Romanesque Interlacement Band

The Romanesque interlacement band consists of wavy arcs and curves that have an angular bend.

### Construction Of Line Equal To Arc

Illustration used to show how to find a straight line of the same length as a given arc of a circle.

### Pulley

Pair of circular pulleys connected b a cord, showing the range of motion as arcs

### Hindley's Screw

"A screw cut on a solid, of such form that if any plane be taken through its longitudinal axis, the…

### Circle Sector

An illustration showing a circle sector with radius r, center/central angle v, and length of circle…

### Circle Sector

An illustration showing a circle sector with center/central angle v and polygon angle w.

### Circle Sector

An illustration showing a circle sector with height of segment h and radius r.

### Sphere With Sectors and Arcs

Diagram of a sphere with sectors and arcs drawn.

### Sphere With Arcs and Poles

A sphere with arcs and poles. "The distance of all points in the circumference of a circle of a sphere…

### Sphere With Arcs

A sphere with arcs drawn.

### Arcs Drawn on Sphere

Illustration of a sphere with arcs drawn.

### Superimposed Symmetrical Spherical Triangles

Diagram showing 2 superimposed symmetrical spherical triangles.

### Symmetrical Spherical Triangles

Diagram showing 2 symmetrical spherical triangles.

### Spherical Triangle

Diagram showing a spherical triangle.