A right angle triangle contains a 90 degree angle and 2 acute angles.
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Your question contains the answer. It is a 'right' triangle.
A right triangle contains one 90 degree angle and the other angles must add to 90 because the sum of the angles in a triangle is 180 degrees.
A "right" triangle, so called because it contains a "right angle".
If a triangle has a right angle, it is a right triangle.
yes it is it is a triangle with a right angle in it