 ### Concentric Circles

Illustration of concentric circles. ### Concentric Circles (Ring) Area

Illustration of concentric circles used to find area between two circles (ring). ### Circles Enclosed in Equilateral Triangle

Illustration of three circles enclosed in an equilateral triangle. ### Equal Circles With Intercepted Arcs

Illustration of equal circles to show that two central angles have the same ratio as their intercepted… Illustrations of 2 equal circles with radii drawn. ### Equal Circles With Radii and Chords

Illustrations of 2 equal circles with radii drawn. ### Infinite Tangent Circles

An illustration depicting an infinite sequence of tangent circles with the radius converging to zero.… ### Circles With Inscribed Angles

Illustration of equal circles to show that an inscribed angle is measured by half the arc intercepted… ### Circle With Polygon and Square Inscribed

Illustration of a circle with a polygon (octagon) and square inscribed. ### Circles Inside of a Square

Illustration of large circle and square with 4 smaller circles inside. ### Intersecting Circles

Intersecting circles with chords and radii. ### Intersecting Lines in Circles

Illustration showing various circles and the angles formed by intersecting lines. ### Intersecting Circles With a Common Chord

Illustration of intersecting circles with a common chord. ### Two Intersecting Circles With Lines

Illustration showing 2 intersecting circles with a line drawn through each point of intersection terminated… ### Two Intersecting Circles With Lines

Illustration showing 2 intersecting circles with a lines drawn that form a triangle. ### Circles With Parallels Intercepting Equal Arcs

Illustration of a circle with parallels intercepting equal arcs on a circumference. ### Circular Pipes in Box

Illustration of box filled with pipes. ### Reflected Arcs Of 2 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward… ### Reflected Arcs Of 2 Circles

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of… ### Reflected Arcs Of 2 Circles

A design created by dividing a circle into 4 equal arcs and reflecting each arc toward the center of… ### Reflected Arcs Of 4 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward… ### Reflected Arcs Of 4 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward… ### Reflected Arcs Of 8 Circles In A Circle

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward… ### Reflected Arcs Of 8 Circles

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward… ### Star Inscribed And Circumscribed About Circles

Illustration of a 6-point star (convex dodecagon) inscribed in a large circle and circumscribed about… ### Star Inscribed And Circumscribed About Circles

Illustration of an 8-point star (convex polygon) inscribed in a large circle and circumscribed about… ### Tangent Circles With Chords

Illustration showing 2 circles with that touch each other and two lines drawn through the point of contact… ### Projection of Circular Ring

Projection of a circular ring. ### Construction Of Circumference

Illustration used to show how to pass a circumference through any three points not in the same straight… ### Inking a Circle

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

Illustration of a composite figure made up of rings, rectangles, triangles, etc.. ### Circle Inside Concentric Rectangles

Illustration of a circle inside of 2 concentric rectangles whose vertices are connected by line segments. ### Cross Section of Concrete Conduit

Cross section of concrete conduit. The diagram can be used to find volume. ### Development Exercise of Cone

Development and top completion exercise problem of the cone by dividing the base into equal parts and… ### Development Exercise of Flange and Hood Cones

An exercise problem to complete the top and develop, stretched out, image of the flange and hood cones… ### Conic Section Using Circle

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

Diagram of a cone with spheres and cut by a plane to depict the conic sections. ### Cone depicting Conic Sections

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

Diagram showing how to construct a conic when given the focus and the auxiliary circle. If the focus… ### Focus In Auxiliary Circle of Conic

Diagram showing how to construct a conic when given the focus and the auxiliary circle. The focus is… ### Focus In Auxiliary Circle of Conic

Diagram showing how to construct a conic when given the focus and the auxiliary circle. As the focus… ### Construction of Arc When Given the Chord and Height of the Segment

Illustration of of construction of an arc when the chord and height of the segment are given. ### Construction of a Circle When Given Two Points and a Radius

Illustration used to construct a circle when given two points that it passes through and a radius. ### Triangle With Circle Constructions

Illustration of a triangle with its incircle and three excircles constructed. ### Construction to Circumscribe a Circle About a Triangle

Illustration of the construction used to circumscribe a circle about a given triangle. ### Construction of a Common Tangent When Given Two Circles

Illustration used to construct a common tangent when given two circles. ### Construction of Escribed Circles With Ex-centres

Illustration of the construction used to escribe circles with centres (centers) called ex-centres of… ### Construction to Inscribe a Circle in a Triangle

Illustration of the construction used to inscribe a circle in a given triangle. ### Construction of Radius When Given Only a Part of the Circumference

Illustration of of construction of a radius when given only a part of the circumference. ### Construction of Radius When Given Only a Part of the Circumference

Illustration of of construction of a radius when given only a part of the circumference. ### Construction to Describe a Segment of a Circle in Which an Angle Can Be Inscribed

Illustration of the construction used upon a given straight line, to describe a segment of a circle… ### Construction of Tangent Line Through a Given Point to a Given Circle

Illustration of the construction used to draw a tangent to a given circle through a given point. ### Intersection of Cylinder and Cone

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

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

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

The illustration shows the cylinder rolled out in a tangent plane of the base to create a development… ### Cylinder Inscribed in Pentagonal Prism

Right circular cylinder inscribed in a pentagonal prism. Or, Pentagonal prism circumscribed about a… ### Isometric of a Cylinder

Isometric of a cylinder. ### Planes Passing Through A Cylinder

Illustration of planes passing through a cylinder. ### Right Circular Cylinder

Right circular cylinder.