Answer :

Chelboy

Answer:proved

Step-by-step explanation:

Sum of interior angles of a polygon=180

Sum of interior angles of a polygon=180(n-2)

n=number of sides

a triangle have 3 sides n=3

Sum of interior angles of a triangle=180(3-2)

Sum of interior angles in a triangle=180 x 1

Sum of interior angles in a triangle=180°

kbell23

Answer:

im adding the completed one to all of the questions

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