11. In Δ ABC and Δ DEF, ABDE, AB 11 DE, BC-, EFand BC || EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that0) quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogramE.(ii) AD | CF and AD CF(iv) quadrilateral ACFD is a parallelogram(v) AC DF(vi) Δ ABC Δ DEF.Fig. 8.22

11. In Δ ABC and Δ DEF, ABDE, AB 11 DE, BC-, EFand BC || EF. Vertice

1.	11. In Δ ABC and Δ DEF, ABDE, AB 11 DE, BC-, EFand BC \|\| EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that0) quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogramE.(ii) AD \| CF and AD CF(iv) quadrilateral ACFD is a parallelogram(v) AC DF(vi) Δ ABC Δ DEF.Fig. 8.22
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