Chapter 1: Q33 (page 9)
Sketch and label the figures described. Use dashes for hidden parts.
Point P is not in plane N. Three lines through point P intersect N in points A, B, and C.
Short Answer

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Chapter 1: Q33 (page 9)
Sketch and label the figures described. Use dashes for hidden parts.
Point P is not in plane N. Three lines through point P intersect N in points A, B, and C.

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A plane can be named by three or more non-collinear points it contains. In chapter 12 you will study pyramids like the one shown at the right below.

Name two planes that intersect in .
Name three planes that intersect at point B.
State a postulate, or part of a postulate, that justifies your answer to each exercise.

Does plane N contain any points not on ?
Draw two points P, Q on a sheet of paper. Fold the paper so that fold line f contain both P, Q. Unfold the paper. Now fold so that P falls on Q. Call the second fold g. Lay the paper flat and label the intersection of f and g as X. How are points P, Q and X? Explain.
Sketch and label the figures described. Use dashes for hidden parts.
Vertical planes X and Y intersect in .
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