McGraw Hill Integrated II, 2012
MH
McGraw Hill Integrated II, 2012 View details
1. Postulates and Paragraph Proofs
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Exercise 41 Page 281

First, highlight CD.

Postulate 2.7

Practice makes perfect

In the figure, CD and CE lie in plane P and DH and DJ lie in plane Q. Looking at the figure, we will state the postulate that can be used to show the given statement is true.

Statement Plane P and plane Q intersect at CD.

Let's first highlight CD.

Postulate 2.7 states the following. If two planes intersect, then their intersection is a line. Thus, plane P and plane Q intersect at CD.