CLASSIFY AND MEASURE ANGLES

obtuse

125°

straight

180°

acute

38°

right

90°

True

Complementary angles have a sum of 90°.

False

If angle 1 measures 98° and angle 2 measures 72°, then the two angles are supplementary.

an angle that measures more than 0° but less than 90°

acute angle

two angles that have a common vertex and side but are not overlapping

adjacent angles

two angles whose sum is 90°

complementary angles

an angle that measures more than 90° but less than 180°

obtuse angle

an angle that measures exactly 90°

right angle

an angle that measures exactly 180°

straight angle

two angles whose sum is 180°

supplementary angles

the point where two line segments, lines, or rays meet to form an angle

vertex

angles that are opposite from one another at the intersection of two lines; vertical angles are congruent

vertical angles