Question

Please help?

Answer 1

ABCDEFGH is a regular octagon with AB=8. Find AC, AD, and AE.

Answer 2

if it is a regular octagon, will all the sides be equal?

Answer 3

Yeah but AC, AD, and AE are all diagonals

Answer 4

I see the draw function is not working.

Answer 5

AC is the long side of an isosceles triangle whose congruent sides are 8 and the included angle is 135. Use the law of cosines to find its length.

Answer 6

Can you explain the law of cosines?

Answer 7

Have you had trig?

Answer 8

No I'm taking Geometry right now

Answer 9

Then you have never had the law of cosines and you would not be able to use it.