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P is the mid-point of side AB of parallelogram ABCD, and Q is the mid-point of DC.
A student wants to prove that APCQ (vertices in order A, P, C, Q) is a parallelogram.
The most direct reason is that:

Class 9Conditions for a ParallelogramGeometry — Quadrilaterals
  • AAP is equal and parallel to QC
  • BAP = AQ
  • CAC bisects angle A
  • DPQ is perpendicular to AC

Step-by-Step Solution

AP = half of AB and QC = half of DC; since AB = DC and AB is parallel to DC, AP is equal and parallel to QC. One pair of opposite sides equal and parallel makes APCQ a parallelogram.
Answer: A) AP is equal and parallel to QC

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