and BC EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 7.22)Show that(i) quadrilateral ABED is a parallelogram(i) quadrilateral BEFC is a parallelogram(ii) AD |CF and AD - CF(iv) quadrilateral ACFD is a parallelogramFip 7.22(v) AC DF(v) Δ ABC Δ DEF.

and BC EF. Vertices A, B and C are joined tovertices D, E and F respec

1.	and BC EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 7.22)Show that(i) quadrilateral ABED is a parallelogram(i) quadrilateral BEFC is a parallelogram(ii) AD \|CF and AD - CF(iv) quadrilateral ACFD is a parallelogramFip 7.22(v) AC DF(v) Δ ABC Δ DEF.
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