Pearson Geometry Common Core, 2011
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Pearson Geometry Common Core, 2011 View details
2. Points, Lines, and Planes
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Exercise 3 Page 16

The intersection of two planes is a line.

RS

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The intersection of the vertical plane and the horizontal plane is the line they have in common. As shown in the diagram, this line passes through the points R and S.

The intersection of the above planes is RS.