an angle whose vertex is the center of the circle.
part of a circle that measures less than 180 degrees
part of a circle that measures between 180 degrees and 360 degrees
an arc whose endpoints are half the circle; endpoints are the diameter of the circle.
2 arcs of the same circle or of congruent circles that have the same measure.
and whose vertex is on a circle and whose sides contain chords of the circle
the arc that lies in the interior of an inscribed angle and has endpoints on the angle.
polygon whose vertices all lie on a circle.
circle with an inscribed polygon
set of all points in a plane that are equidistant from a given point
distance from the center of a circle to a point on the circle
2 circles that have the same radius
chord that passes through the center of a circle
segment whose endpoints are points on the circle
segment that intersects a circle twice.
circles that intersect in one point
circles that have a common center
a line or segment that is tangent to 2 circles
interior of a circle
all points of the plane that are inside a circle
exterior of a circle
all points of the same plane that are outside a circle
point of tangency
point where tangent line meets circle line
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