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.
Notice that AC and BD intersect each other at E
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, AC intersect DB at point E
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
I am another guest (The one who answered but not the one who wrote the question)
Your question is:
What does [AEB] mean?
Well I think it is the angle (written mathematical wrong , but it can't be a side or anything else except M(