One of the angles of a triangle is 20°more than the other. The measure of the third angle is 100°. Find the measure of each of the unknown angles.
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Step-by-step explanation:
the 3 rd angle = 100⁰
sum of all angles in a triangle = 180
the sum of 2 remaining angles = 180-100
= 80⁰
let the one angle be x
let the other angle be x + 20
x + x +20= 80
2x+20 = 80
2x = 80-20
2x = 60
x= 60/2
= 30
the one angle is 30⁰, second angle is 50⁰(x+20)and the 3rd angle is 100
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