Geometry: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281159
ISBN 13: 978-0-13328-115-6

Chapter 1 - Tools of Geometry - 1-2 Points, Lines, and Planes - Practice and Problem-Solving Exercises - Page 19: 68


a) The four planes that form the faces are ABC, ACD, ABD and BCD. b) $\overset\longleftrightarrow{AD}$, $\overset\longleftrightarrow{BD}$, $\overset\longleftrightarrow{CD}$

Work Step by Step

a) Each side of the tetrahedron is a plane. b) You can see in the figure that 3 lines lead to point D.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After 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.