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geometric mean

a/x = x/b x is in this position

Pythagorean Triple

the lengths of three sides of a right triangle


triangle measurement


the given point


a segment whose endpoints are on the circle


a line that contains a chord


a chord that contains the center of the circle


is a line in the plane of a circle that intersects the circle in exactly one point

point of tangency

the point in which the tangent intersects the tangent


with center O and radius r is the set of all points in space at a distance r from point O

concentric circles

circles with the same center

common tangent

a line that is tangent to each of two coplanar circles

central angle of a circle

an angle whose vertex is the center of the circle
(equal thier arcs)

minor arc

less than 180 degrees. (2 letters)

major arc

> 180 degrees (3 letters)


= 180 degrees (3 letters0

inscribed angle

an angle whose vertex is on the circle


set of all points in a plane at a given distance from a given point in that plane.

tangent circles

coplanar circles that are tangent to the same line at the same point; can be internally or externally tangent

adjacent arcs

arc that have exactly one point in common

congruent arcs

arcs in the same or congruent circles that have equal measures

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