Circles

Front

The distance around a circle is

Back

Circumference

Front

A polygon whose vertices are on a circle and whose edges are within the circle

Back

inscribed polygon

Front

Every point on a circle is the same distance from the

Back

center

Front

An angle whose vertex is on the circumference of a circle and whose sides include chords of the circle

Back

inscribed angle

Front

The distance across the circle, through its center

Back

Diameter

Front

An angle whose vertex is the center of the circle

Back

central angle

Front

The distance from a circle to its center

Back

radius

Front

Half of a circle

Back

semicircle

Front

Two or more circles with the same center

Back

Concentric circles

Front

A portion of a circle and its interior bound by an arc and two radii

Back

Sector