The sum of the angles of a triangle is_______
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Answer: The sum of the angles of a triangle is 180^o
Step-by-step explanation:
The sum of the angles of a triangle is 180^o
Draw a triangle ABC
Draw a line a through points A and B.
Draw line b through C and parallel to a.
Since lines a and b are parallel,
⟹∠BAC=∠B
CA and ∠ABC=∠BCA
It is obvious that ∠B
CA+∠ACB+∠BCA =180^o
∴∠ABC+∠BCA+∠CAB=180^o
Hence, the sum of angles of a triangle is 180^o
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The sun of the angle of a triangle is 180
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