Question

if AB=60 and CE=20. What is the measure of 11 years ago

Answer 1

@jim_thompson5910

Answer 2

@Arnab09 u get it /.\

Answer 3

i am trying, wait lol

Answer 4

okay :)

Answer 5

can i upload a picture of my solution?

Answer 6

yes

Answer 7

after the steps in my solution, add, <EDC=180-(<ECD+<CED)=180-2*80=20

Answer 8

you can also use theorem 5 on this page (where it says "Two Secants")

http://www.regentsprep.org/Regents/math/geometry/GP15/CircleAngles.htm

Answer 9

@naomi18
So far, you would be using the following theorems:
1. inscribed angle
2. intersecting chords
3. intersecting secants.
There may be other ones to come, but do keep these in mind. Later on in the exercises, you may have to apply more than one of the theorems to solve a single problem!

Good luck and keep up the good work on your online course.