sum of angles of a triangle question

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Why sum of all angles of triangle is 180?

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.

How do you prove triangle angles sum theorem?

How do you prove angle sum property of a triangle class 9?

How do you find the angles of a triangle is 180 degrees?


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