prove that the sum of 3 angles of a triangle is two right angle
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X = smaller acute angle in right triangle
4x = larger acute angle
90 = right angle
x + 4x + 90 = 180
5x = 90
x = 18
4x = 72
Acute angles are 18° and 72°
4x = larger acute angle
90 = right angle
x + 4x + 90 = 180
5x = 90
x = 18
4x = 72
Acute angles are 18° and 72°
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