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It is simply a right angle triangle but if the sides were the same then it is an isoceles right angle triangle
You have to check to see what type of angle it is first or check to see which angle equally to that number.
a circle is 360 degrees. so whatever exterior angle u have u can subtract it from 360 to see what the interior angle is!
A complementary angle is an angle of a size so that when added to another angle, the two together equal 90 degrees.Complementary angles add up to 90 degrees whereas supplementary angle add up to 180 degrees
An acute angle is an angle that measures less than 90 degrees. See the related link, "Acute Angle Pictures" for a diagram of some acute angles.