1.

IF DE PARALLEL BC, CD PARALLEL EF, THEN PROVE THAT, AD^2=AB*AF​

Answer»

ANSWER:

Step-by-step EXPLANATION:

this question can be SOLVED by using thales theorm corollary or BPT corollary

in ADC,by  BPT

we get

af/ad=ae/ac .                   eq1

in ABC,by BPT

we get

ad/ab=ae/ac .                 eq2

from 1 and 2

we get

af/ad=ad/ab

by cross multiplying

ad²=af×ab    



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