Question

Why the Triangle sum 180° only.
Please answer correctly I will make you brainst.

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Answer 1

Answer:

A triangle's angles add up to 180 degrees because one exterior angle is equal to the sum of the other two angles in the triangle. In other words, the other two angles in the triangle (the ones that add up to form the exterior angle) must combine with the third angle to make a 180 angle.

Step-by-step explanation:

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Answer 2

Answer:

because the triangle is made of 3 sides whose sum is 180° . To make it a triangle all sides should be equal otherwise it wont look like a triangle.