Question
Question: The number of planes that are equidistant from four non-coplanar points is...
The number of planes that are equidistant from four non-coplanar points is
A
3
B
4
C
7
D
9
Answer
7
Explanation
Solution
Let the points be A, B, C and D.
The number of planes which have three points on one side and the fourth point is on the other side = 4.
The number of planes which have two points on each side of the plane = 3
Ž number of planes is 7.