Question

Picture in comments! I'll be a fan and give medals if you answer!

Answer 1

I need to know the length of B, and CED's angle measure

Answer 2

For m<CED:
In a triangle, the sum of the measures of the angles is 180.
You know the measures of two angles, so you can find the measure of the third.

Answer 3

For m<B:
In a polygon of n sides, the sum of the measures of the angles is (n - 2)*180.
Here you have 4 sides, so n = 4.
Use the formula above to find the sum of the measures of the angles of the 4-sided polygon.
Then you know the measures of 3 of its 4 angles, so you can find the measure of angle B.

Answer 4

I don't understand how you got 180 though? Can you tell me how you got 180 please?

Answer 5

Think of a triangle as a polygon of 3 sides.
That means n = 3.
(n - 2) * 180 = (3 - 2) * 180 = 1 * 180 = 180

Answer 6

Oh whoops i dunno what just happened but thank you! Can you help me with another?

Answer 7

Yes. Pls start a new post. I'll go there.

Answer 8

Ok

Answer 9

@mathstudent55 So wait...the answer to BOTH of these is 180??

Answer 10

125