one of the exterior angles of a triangle is 90 Degrees and its interior opposite angles are equal to each other. find the measure of the two equal angles of the triangle.
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Exterior angle = 90° then it's interior angle is also 90° as 180-90=90°
Other interior angles are angles let both of them x and x
sum of Angles of Triangle= 180
let's find value of x
2x + 90=180
2x = 180-90
2x = 90
x =90/2
x = 45°
than other both angles measure 45°
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