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21 terms

geometry 10.2/3

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