What is the measure of angle a?

➷ As all lengths of the triangle are equal, we can determine that it is an equilateral triangle.
Therefore, the angles would be equal to each other.
As you may know, the angles in a triangle total to 180 degrees so we need to divide this value by 3 to get the answer:
180/3 = 60
The answer is D. 60 degrees
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Answer:
i think it is D i am so sorry if you got it wrong
Step-by-step explanation: