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11 terms

Geometry Test 9/14

STUDY
PLAY
postulate
(axiom) statement that is accepted as true without proof
midpoint
point that bisects the segment into two congruent segments
angle bisector
a ray that divides an angle into two congruent angles
undefined term
points, lines, planes (can't be defined by any figure)
angle
figure formed by two rays with a common endpoint
ray
starts at an endpoint and extends forever in one direction
segment
part of a line consisting of two points and all the points between them
vertical angles
two nonadjacent angles formed by two intersecting lines
congruent angles
angles that have the same measure
opposite rays
two rays that have a common endpoint and form a line
segment bisectors
any ray, segment, or line that intersects a segment at its midpoint