Write the measure of each angle of an isosceles right-angled triangle.
A
45o,90oand45o
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B
30o,90oand60o
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C
60o,60oand60o
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D
30o,120oand30o
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Solution
The correct option is A45o,90oand45o Since, the angle is right angled isosceles triangle. One of the angles will be 90∘. let the other two angles be x Thus, sum of angles = 180 90+x+x=180 2x=90 x = 45∘ The measure of each angle is: 45∘,45∘,90∘