McGraw Hill Integrated II, 2012
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McGraw Hill Integrated II, 2012 View details
1. Postulates and Paragraph Proofs
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Exercise 12 Page 279

Notice that the points N and K could be on the same line.

Postulate 2.3

Practice makes perfect
In the given figure, AK is in plane P and M is on NE. We will state the postulate that can be used to show the given statement is true.

Statement N and K are collinear. Looking at the figure, we can see that the points N and K could be on the same line. Therefore, Postulate 2.3 can be used to show that the given statement is true. A line contains at least two points.