Question

The exterior angles of a triangle are 70°, 100° and x. Find x.

Answer 1

Given ,

The exterior angles of triangle are 70 , 100 and x

We know that , the sum of exterior angles of a triangle is 360

Thus ,

70 + 100 + x = 360

170 + x = 360

x = 360 - 170

x = 190

$\sf \therefore \underline{The \: value \: of \: x \: is \: 190}$