Geometry: Common Core (15th Edition)

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

Chapter 1 - Tools of Geometry - Chapter Review - Page 71: 8



Work Step by Step

The intersection of two planes is the set of points that are shared by the two planes. In this case, the line $\overline{QR}$ is the line at which the two planes intersect because the two planes meet at this line. Note how both planes also contain $Q$ and $R$ in their names.
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