Circles

A plane figure enclosed by curve such that all the points on the curve are of the same distance from a fixed point.

Called the center of the circle.

The curve of the circle.

A line segment joining any two points on the circumference.

A chord passing through the center. Is also the longest line in a circle.

A line segment joining the circle a point on the circumference.

Exactly intersects a circle at one point.

Extended chords.

A portion of the circumference.

Less than 180 degrees.

More than 180 degrees.

Enclosed by a chord and an arc.

Enclosed by a diameter and an arc.

Bounded by two radii and an arc.

Angle which vertex is at the center.

Angle which vertex is on the circle.

if the radii(or diameter) of two circles are equal.

Same center.

Is equal to the measurement of a central angle.

Is the sum of all the measures in a circle.