11. 1n Δ ABC and Δ DEF, ABDE, AB 11 DE, BCEFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that130 quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram pao(ii) AD IICF and AD CFFig. 8.22(iv) quadrilateral ACFD is a parallelograma a t(v) AC DF(vi) Δ ABC= Δ DEF.

11. 1n Δ ABC and Δ DEF, ABDE, AB 11 DE, BCEFand BC II EF. Vertices A

1.	11. 1n Δ ABC and Δ DEF, ABDE, AB 11 DE, BCEFand BC II EF. Vertices A, B and C are joined tovertices D, E and F respectively (see Fig. 8.22).Show that130 quadrilateral ABED is a parallelogram(ii) quadrilateral BEFC is a parallelogram pao(ii) AD IICF and AD CFFig. 8.22(iv) quadrilateral ACFD is a parallelograma a t(v) AC DF(vi) Δ ABC= Δ DEF.
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