In `DeltaABC` and `DeltaDEF`, AB= DE, AB `abs` DE, BC= EF and `BC abs EF`. Vertices A, B and C are joined to vertices D, E and F respectively. Show that
Quadrilateral ABED is a parallelogram

In DeltaABC and DeltaDEF , AB= DE, AB abs DE, BC= EF and BC abs EF . Vertices A, B and C are joined to vertices D, E and F respectively. Show that Quadrilateral BEFC is a parallelogram

In DeltaABC and DeltaDEF , AB= DE, AB abs DE, BC= EF and BC abs EF . Vertices A, B and C are joined to vertices D, E and F respectively. Show that AC= DF

In DeltaABC and DeltaDEF , AB= DE, AB abs DE, BC= EF and BC abs EF . Vertices A, B and C are joined to vertices D, E and F respectively. Show that quadrilateral ACFD is a parallelogram

In DeltaABC and DeltaDEF , AB= DE, AB abs DE, BC= EF and BC abs EF . Vertices A, B and C are joined to vertices D, E and F respectively. Show that DeltaABC~=DeltaDEF .

In DeltaABC and DeltaDEF , AB= DE, AB abs DE, BC= EF and BC abs EF . Vertices A, B and C are joined to vertices D, E and F respectively. Show that AD abs CF and AD = CF

In DeltaABC and DeltaDEF, AB=DE,AB||DE, BC=EF and BC||EF Vertices A,B and C are joined to vertices D , E and F respectively show that quadrilateral ABED is a parallelogram quadrilateral BEFC is a parallelogram AD||CF and AD=CF quadrilateral ACFD is a parallelogram AC=DF DeltaABC approx DeltaDEF .

ABCD is quadrilateral E, F, G and H are the midpoints of AB, BC, CD and DA respectively. Prove that EFGH is a parallelogram.

In Fig A, B and C are points on OP, OQ and OR respectively such that AB || PQ and AC || PR . Show that BC || QR.

In the adjacent figure, we have AC = XD, C and D are mid points of AB and XY respectively. Show that AB = XY.

If Delta ABC and Delta DEF are similar and 2AB = DE , BC = 8 cm , then calculate EF.