if one angle of a triangle is equal to the sum of the other two so that the triangle is a right angle
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Sum of angles in a triangle is 180 degrees.
right angled triangle means one angle is 90 degrees
Therefore the other two angles together would measure 180-90=90 degrees
If smaller angle is a, the other is 2xa and the sum is a+2a = 3a = 90
Therefore a = 90/3= 30 degrees
the other angle is 2x30 = 60 degrees
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