Answer:
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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