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