F2: Prove that 'The sum of the angles of a triangle is 180°.
VI. Solve:
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Answer:yjgjfjC
Step-by-step explanation:
Answered by
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Step-by-step explanation:
let there be a triangle ABC
to prove: a + b + c = 180
construction : draw a line Pq || bc
proof :b = pab and c =qac (1)
also, pab +a + qac = 180 (linear pair) (2)
putting (1) in (2) we get :
a + b + c =180
hence proved!
thank you
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