#1**0 **

**What does [AEB] mean? ** I have not seen that notation before.

These two triangles are similar.

Can you work out why.

Hint; consider the three angles on each one.

Melody Oct 20, 2019

#2**0 **

Notice that AC and BD intersect each other at E

So,

using our knowledge of V.O.A (Vertical opposite angles)

We know that AEB = DEC (Angle)

We already know AEB=50, therefore, CED=50

With more proof,

Since, m(B)=m(C)

since, AC intersect DB at point E

Therefore m(AEB)=M(DEC)=50

Therefore, M(EAB)=m(EDC)

We deduce that triangle AEB is similar to triangle DEC

we can also deduce that EB/EC = ED/EA = AB/DC

so 5/4=ED/EA =AB/DC

Guest Oct 20, 2019