Question

From two-dimensional space to three dimensional space, the number of quadrants ___________

Answer 1

The number of quadrants from a two dimensional space are doubled from 4 to 8.

The number of quadrants are doubled

Answer 2

Increase.

Explanation:

Two-dimensional space is modelled by the coordiante system with 4 quadrants only, and the axis are x and y, the independent and the dependent variables, respectively.

On the other hand, the three-dimensional space has three coordinates, x, y and z. The extra coordinate allows to have a three-dimensional space. Also, this extra coordinate increases the number of quadrants, actually, they are called octants, becayse they are eight.

Therefore, the word missing here is "increase".