Fill in the blank. through non-collinear points there is exactly one plane. a. two b. three c. four d. five

B) Three



A plane is a flat 2D surface. It is a rule that you need at least 3 points to know the orientation (angle) of the plane. Two points would only be able to form a line, and though that line can be going through the plane, you won't be able to know what orientation (angle) that plane is at.

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