21 terms

geometric mean

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

Pythagorean Triple

the lengths of three sides of a right triangle

trigonometry

triangle measurement

center

the given point

chord

a segment whose endpoints are on the circle

secant

a line that contains a chord

diameter

a chord that contains the center of the circle

tangent

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

sphere

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)

(equal thier arcs)

minor arc

less than 180 degrees. (2 letters)

major arc

> 180 degrees (3 letters)

semicircle

= 180 degrees (3 letters0

inscribed angle

an angle whose vertex is on the circle

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