#### Answer

$\triangle$ ECB, $\triangle$ EDC, $\triangle$ EAB, $\triangle$ EDA

#### Work Step by Step

All lateral faces of a pyramid are triangles,
$\triangle$ ECB, $\triangle$ EDC, $\triangle$ EAB, $\triangle$ EDA are the lateral faces of pyramid.

Chegg costs money, GradeSaver solutions are free!

Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

$\triangle$ ECB, $\triangle$ EDC, $\triangle$ EAB, $\triangle$ EDA

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.