Find the value of x and unknown interior angle for each triangle

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asked Apr 12, 2018 171k views

4 votes

Find the value of x and unknown interior angle for each triangle

Mathematics
middle-school

Elyograg asked

by Elyograg

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1 Answer

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The interior angles of a triangle add up to 180 degrees, therefore:

40 + 40 + x-10 = 180
80 + x - 10 = 180
70 + x = 180
x = 110

< D = 110 - 10 = 100

Siddharth Shah answered Apr 18, 2018

by Siddharth Shah

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