Two angles whose sum is 90 degrees are called complementary angles.
Two angles whose sum is 180 degrees are called supplementary angles.
A single angle of 90 degrees is called a right angle.
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A pair of adjacent angles whose non-common sides are opposite rays are called a linear pair. The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.
The angles are called supplementary if they add to 180 degrees. Where the two angles are adjacent, they form a "linear pair" such that their farthest sides lie on the same line.
A pair of two angles whose sum is equivalent to 180 degrees are called supplementary angles. If you have two parallel lines cut by a transversal, then the two angles on the same side of the transversal are called same side interior angles. They add up to 180 also. Glad I could help! :D
they are called supplementary angles. a straight line has 180 degrees each side and two adjacent angles forming 180 degrees are called supplementary angles.
The 4 interior angles of a trapezoid add up to 360 degrees and if it's an isosceles trapezoid then base angles will be equal