Geometry Vocab Test
Obtuse Angle
An angle that measures greater than 90 degrees but less than 180.
Acute Angle
An angle that measures less than 90 degrees.
Adjacent Angles
Angle pairs that share a ray. (side by side)
Vertical Angles Theorem
If two angles are vertical angles, then they have equal measures.
Complementary Angles
Two positive angles that together form a right angle (90 degrees) are called complementary angles.
Angle Bisector
Bm is an angle bisector.
Reflex Angle
An angle greater than 180 degrees.
Right Angle
An angle is that measures exactly 90 degrees.
Straight Angle
An angle of exactly 180 degrees
Linear Pair Postulate
If two positive angles form a linear pair, then they are supplementary (180 degrees)
Congruent
Same
The Protractor Postulate
The measure of the angle is the absolute value of the difference of the real numbers paired with the sides of the angle, because the parts of angles formed by rays between the sides of a linear pair add to the whole, 180 degrees.
Supplementary Angles
When added together, the measures of these angles is 180 degrees, forming a linear pair.