P and Q are the points of trisection of the diagonal BD of a parallelogram ABCD. Prove that CQ is parallel to AP. Proves also that AC bisects PQ.
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Answer:
In ∆DPC and BQA,
DP=BQ (given)
AB=CD ( ABCD is a parallelogram)
angle CDP = angle ABQ
∆DPC=~∆ BQA
Therefore, AB= AQ
Similarly, AP= CQ
Therefore, APCQ is a parallelogram.
Hence, PQ and AC bisect each other.
Hope it helps you.
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