11. In Δ ABC and Δ DEF, AB-DE,ABIDE, BC-EFand BC l| 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(i) quadrilateral BEFC is a parallelogram(m) ADI CFand AD-C(iv) quadrilateral ACFD is a parallelogram(v) AC-DF(vi) Δ ABC Δ DEFFig. 8.22

11. In Δ ABC and Δ DEF, AB-DE,ABIDE, BC-EFand BC l| EF. Vertices A,

1.	11. In Δ ABC and Δ DEF, AB-DE,ABIDE, BC-EFand BC l\| 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(i) quadrilateral BEFC is a parallelogram(m) ADI CFand AD-C(iv) quadrilateral ACFD is a parallelogram(v) AC-DF(vi) Δ ABC Δ DEFFig. 8.22
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