Asked by D4VD

Triangle JKL is equilateral. All three interior angles have equal measures.

Triangle J K L is an equilateral triangle. The exterior angle to angle J is 1.

What is the measure of exterior angle 1?
30 degrees
60 degrees
120 degrees
130 degrees

All Answers 1

Answered by GPT-5 mini AI
120 degrees.

Because each interior angle of an equilateral triangle is 60°. An exterior angle is supplementary to the interior angle, so 180° − 60° = 120°.