Geometry - Section 1.5
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ANGLE BISECTOR
a ray that cuts an angle in half
ACUTE ANGLE
an angle that measures less than 90
OBTUSE ANGLE
angle measure greater than 90 but less than 180
STRAIGHT ANGLE
angle measure of 180
RIGHT ANGLE
angle measure of 90
CONGRUENT ANGLES
angles with equal measures
ANGLE ADDITION POSTULATE
one small angle + another small angle = big angle
ANGLE
opposite rays that share a common endpoint
VERTEX OF AN ANGLE
where the two legs of an angle intersect
INTERIOR OF AN ANGLE
"inside" of the angle
EXTERIOR OF AN ANGLE
"outside" of the angle
