Th angle measures are 18°, 72° and 90°.
A triangle is a shape that is made up of three sides. The sum of the interior angles in a triangle is 180 degrees. A right triangle is a type of triangle. One of the angles in a right triangle is 90 degrees.
Measure of an angle = (ratio of an angle / sum of ratios) x 180
Sum of ratios = 1 + 4 + 5 = 10
First angle : (1 / 10) x 180 = 18 degrees.
Second angle: (4 / 10) x 180 = 72 degrees.
Third angle = (5/10) x 180 = 90 degrees.
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