prove that the sum of all angles in traingle is 180 degree
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TRIANGLE.
Proof that the sum of the angles in a triangle is 180 degrees.
If ABC is a triangle then <)ABC + <)BCA + <)CAB = 180 degrees. Draw line a through points A and B. Draw line b through point C and parallel to line a.
Proof that the sum of the angles in a triangle is 180 degrees.
If ABC is a triangle then <)ABC + <)BCA + <)CAB = 180 degrees. Draw line a through points A and B. Draw line b through point C and parallel to line a.
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