In triangle TOY, all the angles are congruent. What is the measure of an exterior angle adjacent to angle T? *

The measure of the exterior angle adjacent to angle T is 120 degrees.

Step-by-step explanation:

Triangle TOY is an equilateral triangle because all of the angles are congruent.

This means that each of the interior angles of the triangle is 60 degrees because 180/3 = 60.

Take 180 - 60 to find the measure of one exterior angle

180 - 60 = 120 degrees

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