SOS Math 800: Unit 6- Classify and Measure Angles

If two angles are supplementary and one of the angles measures 38°, what is the measure of the larger angle?

142°

If each of two complementary angles has the same measure, then each angle will equal _____.

45°

If angle 1 and angle 5 are vertical angles and angle 1 equals 55°, then angle 5 will equal _____.

55°

Adjacent angles are always supplementary.

False

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

False

All pairs of vertical angles are equal.

True

Complementary angles have a sum of 90°.

True

straight angle

an angle that measures exactly 180°

right angle

an angle that measures exactly 90°

acute angle

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

obtuse angle

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

vertical angles

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

vertex

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

adjacent angles

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

supplementary angles

two angles whose sum is 180°

complementary angles

two angles whose sum is 90°