an exterior angle of a triangle is 100° and its interior opp. angles are equal to each other. find the measure of each of the triangle.
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, if exterior angle is 100°
then the corresponding interior angle is
180-100 = 80°
Since sum of angles of a triangle is 180∘,
we get
x+x+80=180
2x=180−80= 100°
x=100°/2 = 50°
So angles are 50∘,50∘,80∘
then the corresponding interior angle is
180-100 = 80°
Since sum of angles of a triangle is 180∘,
we get
x+x+80=180
2x=180−80= 100°
x=100°/2 = 50°
So angles are 50∘,50∘,80∘
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