Question

An exterior angle of a triangle is of measure 130° and one of it's interior opposite angles is of measure 60°. Find the measure of other interior opposite angle.​

Answer 1

Concept

Exterior Angle = Sum of Interior opposite angles

( In a Triangle )

To Find

Measure of other interior angle

Given

Exterior Angle = 130°

One of the Interior Angle = 60°

Assumption

Let another interior angle be x.

Solving Using Concept

130° = 60° + x

x = 70°

Answer

So, the another interior angle is 70°.

Thank you.