Answer
See the picture below:
Work Step by Step
Given: $f$ and $g$ intersect. ($f\nparallel g$)
Prove: $\angle ACB \cong \angle ECD$
(The same for $\angle ACE$ and $\angle BCD$)
Elementary Geometry for College Students (5th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Brooks Cole
ISBN 10:
1439047901
ISBN 13:
978-1-43904-790-3
Chapter 1 - Section 1.7 - The Formal Proof of a Theorem - Exercises - Page 53: 15
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.
