well, 1 right angle is equal to 90 degrees, when added up, its 180.
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There are: 2.5 times 90 = 225 degrees
Two angles the sum of whose measures is 90 degrees are complimentary angles.
They both will be right angles that add up to supplementary angles 180 degrees
Triangles total 180 degrees. Triangles have three angles. Two angles of 90 degrees total 180 degrees.
Depends on your question. A rectangle is a parallelogram and has 4 right angles. BUT A parallelogram can have only a total of one, two, or four right angles. Mathematically, 3 right angles is 270 degrees. A parallelogram has 360 degrees. 360 - 270 = 90 degrees = right angle.