The number of planes that are equidis...

The number of planes that are equidistant from four non-coplanar points is a. `3` b. `4` c. `7` d. `9`

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The correct Answer is:

Let the point be A,B C and D.
The number of planes which have three points on one side and the foruth point on the side is 4. The number of planes which have two points on each side of the plane is 3.

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CENGAGE ENGLISH-THREE-DIMENSIONAL GEOMETRY -SINGLE CORRECT ANSWER TYPE

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