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powp
Apr2-05, 06:26 AM
How do you prove that CD/AB = DE/AE when Angle A = Angle D in the attached Diagram??

THanks

powp
Apr2-05, 06:30 AM
Here is the image

A_I_
Apr2-05, 07:26 AM
if angle A = angle D
what can u say about the triangles ABE and EDC?
what conclusion can u make?

powp
Apr2-05, 07:57 AM
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_
Apr2-05, 08:04 AM
u can get to say that those triangles are similar
so u can use the proportion law
and obtain the result
ok?