Question

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

Answer 1

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