Question

The two interior opposite angles of an exterior angle of a triangle are 60° and 80°. Find the measure of the exterior angle.​

Answer 1

First opposite angle is 60 degree.

Second opposite angle is 80 degree.

Exterior angle = First and Second oppo. angle

Exterior angle = 60+ 80

Exterior angle = 140 degree

Henced Exterior Angle is 140 degree.

Answer 2

Answer:  Given that two interior opposite angles of the exterior angle of a triangle are 60 degrees and 80 degrees. The Measure of the exterior angle is equal to the sum of two interior opposite angles. Hence, the measure of the exterior angle will be 60°+80° = 140°.

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