Another Question

[powp]

How do you prove that CD/AB = DE/AE when Angle A = Angle D in the attached Diagram??

THanks

[powp]

Here is the image

[A_I_]

if angle A = angle D
what can u say about the triangles ABE and EDC?
what conclusion can u make?

[powp]

Not sure I am wrong but here is my first thoughts

Angle AEB = Angle DEC

Therefore Angle ABE = Angle DCE

which means that the two triangles are congruant

This is my tought

[A_I_]

u can get to say that those triangles are similar
so u can use the proportion law
and obtain the result
ok?