D B
11. In A ABC and A DEF, AB=DE, AB || DE, BC=EF
and BC II EF. Vertices A, B and C are joined to
vertices D, E and F respectively (see Fig. 8.22).
Show that
(1) quadrilateral ABED is a parallelogram
(ii) quadrilateral BEFC is a parallelogram
(ii) AD II CF and AD=CF
(iv) quadrilateral ACFD is a parallelogram
(v) AC=DF
E
Fig. 8.22
(yi) A ABC EADEF.
11. In A ABC and A DEF, AB=DE, AB || DE, BC=EF
and BC II EF. Vertices A, B and C are joined to
vertices D, E and F respectively (see Fig. 8.22).
Show that
(1) quadrilateral ABED is a parallelogram
(ii) quadrilateral BEFC is a parallelogram
(ii) AD II CF and AD=CF
(iv) quadrilateral ACFD is a parallelogram
(v) AC=DF
E
Fig. 8.22
(yi) A ABC EADEF.
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