Big Ideas Math Integrated I, 2016
BI
Big Ideas Math Integrated I, 2016 View details
1. Points, Lines, and Planes
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Exercise 40 Page 385

Where is plane PQN in the diagram?

K, L, R, and S

Practice makes perfect

The points P, Q, and N are all on the front face of the cube. This means that the front face is contained within plane PQN. Therefore, the plane PQN is as if the front face of the cube was extended indefinitely in all directions.

The points that are not coplanar with P, Q, and N are then any points that are not on the front face of the cube. These are K, L, R, and S.