The Circles ClipArt gallery offers 166 Illustrations of circles with radii, diameters, chords, arcs, tangents, secants, and inscribed angles. Images also include inscribed, circumscribed, and concentric circles.

Illustration of equal circles to show that an inscribed angle is measured by half the arc intercepted…

Illustration of intersecting circles. "If two circles intersect each other, the line joining their centers…

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

Illustration showing 2 intersecting circles with a line drawn through each point of intersection terminated…

Illustration showing 2 intersecting circles with a lines drawn that form a triangle.

Illustration of a circle with parallels intercepting equal arcs on a circumference.

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

A design created by dividing a circle into 4 equal arcs and creating a reflection of each arc toward…

Illustration of two circles that are tangent to each other, the line of center passing through the point…

Illustration of tangent circles. One circle is said to be tangent to another circle when they touch…

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

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

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…

To find the equation of a circle whose center is the origin and whose radius is 3 units in length.

Three suspended concentric circles free to move independently of each other at right angles.

The magic circle of circles, first developed by Benjamin Franklin, consists of eight annular rings and…

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

An illustration of a ring (circle within circle), with diameters of 3a-7 and 6a+9. Illustration could…

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

Illustration of ring (small circle in larger concentric circle) sprung into place.

A secant is "a line which cuts a figure in any way. Specifically, in trigonometry, a line from the center…

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

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

The Advance Traffic Control symbol signs includes the Signal Ahead sign. These signs shall be installed…

"A circle may be considered as made up of triangles whose bases form the circumference, and whose altitude…