Aplane is defined as what type of figure? a. 1-dimensional b. 2-dimensional c. 3-dimensional d. a plane has no dimensions.

A plane is defined as a figure that has B, two dimensions.

This question is about definitions, and the definition of a plane is that it is a flat surface with two dimensions. But, since everything in our world is 3 dimensions (everything, even if it looks small, has some kind of depth), there are no planes in our world. A plane also extends infinitely far, and can be named by 3 points on it.