Please help with D-2

[rancid dune]

Did u try anything

Are F and E midpoints of AB and BC?

Then try by proving that triangles r congruent

U need to do some constructions and prove that triangles r congruent

While u go with the flow u can find the value of EF on basis of AC

I m still trying tto figure out how to bring BD in terms of EF

Try extending this way

That will be helpful?

Then let's try to figure out BD later

For now extend EF to G

In such a way that EF =EG

And prove that triangles BEF annd EGC r congruent

There is a theorem we ussed to do in lower classes

Through which we can find value of EF

And construction would make it easier

So ih higher classes we r supposed to use this directly but i still wanna be sure

This is what i meant

Congruence is a type of similarity or so ig

But i m not sure abt BD

How

Yeah that's what we did for EF

Ef is the line joinibg midpoints and it is half of base AC

Yeah bd ,i was trying to do it in apolonius menthod but couldnt find a lead

Pythagorras too me close but still no lead

Or we r missing smthng

Lemme see

Yeah i think this helps

Wait

I did a mistake

This is corrected one

Now ?

Lost

Or equal

Wait

Where does this take us

No i think it's fine but the methods we know r not enough

We r complicating this