Respuesta :

MathPhys

Answer:

Triangle

Step-by-step explanation:

A regular polygon of n sides has interior angles of:

a = 180 (n-2) / n

Given a = 60:

60 = 180 (n-2) / n

n = 3 (n-2)

n = 3n - 6

6 = 2n

n = 3

The polygon has three sides, so it's a triangle.

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