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Question


In the given figure, AB DC Prove that(i) DMUBMV(ii) DM×BV=BM×DU
969546_2cd9868b06944374abb3173d833c6bc3.png

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Solution

In DMUandBMV

(i) Since ABDC AND DB is transversal,

UDM=MBV (alternate angles)

Since ABDC AND UV is transversal,

DUM=MVB (alternate angles)

DMU=VMB (vertically opposite angles)

DMUBMV (AAA similarity criterion)
Hence, proved.


(ii) Since DMUBMV,

By CPST,
DMBM=DUBV

DM×BV=DU×BM
Hence, proved.

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