CBSE Class 9 Answered
Show that the quadrilateral formed by
joining the mid-points of the sides of a rectangle is a rhombus.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
Expert Answer
Given :- ABCD is a rectangle and E,F,G,H are the midpoints of sides AB, BC< CD and DA respectively.
To Prove:- EFGH is a rhombus.
Proof:-In ABC,
E and F are the mid points of AB and BC respectively.
EF || AC and EF = AC
Similarly, GH || AC and GH = AC
Hence, EF || GH and EF = GH
Thus, EFGH is a parallelogram.
Now, in triangles AEH and EBF,
AE=BE
EAH = EBF
AH = BF
AEH BEF and EH=EF
Therefore, EFGH is a ||gm in which adjacent sides are equal.
Hence, EFGH is a rhombus
Answered by | 04 Jun, 2014, 03:23: PM
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