Squares and rectangles always have, but anyshape
with more than 3 sides can have 2 right angles.
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A restangle can be it but it has 4 angles at 90 degrees.
complementary angle
complementary angles..there are a lot any 2 angles when added together that make 90 degreesComplementary
It is a 4 sided quadrilateral shape having 2 pairs of parallel sides and 4 interior angles of 90 degrees as well as 2 diagonals
an isocelesANS2:Any triangle that has one right angle will have 2 acute angles. An acute angle is less than 90 degrees and the sum of all angles in a triangle is 180 degrees. The sum of the other two angles would have to add to 90 degrees so they would both have to be less than 90 degrees.