Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ π -¹ ² ³ °

You are not logged in.

- Topics: Active | Unanswered

Pages: **1**

**nghoihin1****Guest**

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

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.

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

Offline

Pages: **1**