Question

Prove that Opposite side of Parallelogram are Parallel . ​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

Answer:

R.E.F image

In triangle ADC and ABC,

∠DAC=∠ACB(AB∥CD and taking AC as transversal)

AC=AC (common)

∠DCA=∠BAC(AB∥CD taking AC as transversal)

By ASA criterion of concurrency triangle ADC is congruent to triangle ABC.

AD=BC (By CPCT)

AB=CD (By CPCT)