Math, asked by sunandapandit1974, 11 months ago

4. In Fig. 13.27, the congruent parts are marked.
Prove that tirangleABC = triangleABD.

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Answered by MikeTyson

14

ad=bc

ab=ab

angle dac= angle cbd (1)

angle bac= angle abd (2)

addind 1 and 2,

dac+bac= cbd+abd

angle bad = angle abc

so, by sas ∆abc= ∆bad

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