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2 Coincident Planes & 1 Intersecting

Author:
Kara Babcock
Topic:
Planes
In this example, 2 of the planes are coincident (as explained previously, their equations are scalar multiples of on eanother). The other plane's normal vector is not a multiple of the first two planes' normals, so this plane intersects the first two along a line.

How many points of intersection of all three planes are there?

Check all that apply

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