Question

3-D geometry has ______________ octants.

(a) 1

(b) 2

(c) 4

(d) 8

The question was posed to me by my school teacher while I was bunking the class.

Question is taken from Three Dimensional Geometry in portion Three Dimensional Geometry of Mathematics – Class 11

Answer 1

The correct answer is (d) 8

The explanation is: 3-D geometry can have 3 coordinates each with positive or negative value.

Total octants = 2*2*2 = 8.