Question

through the mid M of side CD of a parallelogram ABCD, the line bm is drawn interesting AC in L and AD produce in E. Prove that EL=2BL

Answer 1

To prove 2bl=el
Proof
In tra. Bmc and tra. Emd
Ang. Bmc=ang.edm. vertically opposite ang.
Mc=dm is given
Ang. Bmc= ang. Edm ... Allternate ang
Therefor tai. Bmc and tra. Edm asa rule
=bc=de cpct
Ae=ad+de=bc+bc=2bc. 2
Now ang