Example 6 : ABCD is a parallelogram in which P and Q are mid-points of opposite sides AB and CD. If AQ intersects DP at S and BQ intersects CP at R, show that: (i) APCQ is a parallelogram (ii) DPBQ is a parallelogram (iii) PSQR is a parallelogram Example 6 : ABCD is a [...]