No because the 2 angles do not add up to 90 degrees
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right angles and 90 degrees angle.
no. the angles in a triangle must add up to 180 degrees. The right triangles must have an right angle (90 degrees). If you add up all the angles they will not measure 180 degrees.
Yes. The general rule for angles is that the sum of the angles must be 180 degrees.
Since the sum of the measures of the angles in a triangle is 180°, and a right angle has a measure of 90°, it follows that the other two angles together have a measure of 90°.
A rectangle is the only such shape. Not sure about the "little" right angles: all right angles are of the same measure.