Question

The measure of two angles of a triangle are in the ratio 7:11. if the sum of these two angles is equal to the third angle., find the measure of all angles of triangle.

Answer 1

let the angles be 7x and 11x
third angle =11x+7x=18x
by angle sum prop
7x+11x+18x=180
36x=180
x=5
therefore angles are 35,55,90

Answer 2

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