 ### 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. ### 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… ### 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.