Math Is Fun Forum

nghoihin1

Guest

Quadrilateral

In a quadrilateral ABCD, angle ABC = 40 degrees, angle BCD = 100 degrees and angle CDA = 60 degrees. E is a point on BC such that AE bisects the angle BAD. Find the size of the angle AED if angle BCA = 44 degrees.
I found angle BEA = 80 degrees, angle EAC = 16 degrees, angle CAD = 64 degrees, angle ACD = 56 degrees. I still cant solve the q.

Ricky

Moderator

Registered: 2005-12-04

Posts: 3,791

Re: Quadrilateral

There is something wrong.

EAC = 16
CAD = 64

So EAD = 80

AEC = 100
ECD = 100
ADC = 60

So quad AECD has a sum of 340 degrees.

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