Prove that the sum of angle if of triangle is180

1.	Prove that the sum of angle if of triangle is180
Answer» You can see in ncert book example of chapter 7 If we prove that angle a is equals to angle b and angle a is equals to c then it is prove that angle a+b+c=180 If one angle is 60 degree then sum of 3 angle is 180 degree.

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