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Proving Parallelogram
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13 votes
Proving Parallelogram

Proving Parallelogram-example-1
User MathOldTimer
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1 Answer

14 votes

Answer:

Soln.

Given that we have proven:AB =CD and BC=DA

we will be said that the A and C is the angle of 90° and we will add the letters to get the results so let's started the A+90°+ 90°+ B+C+ D=90°

A+180°+B+C+D

180°+90°

=270°

User Mangusta
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