Question

The distinguishing feature(s) of plane geometry is/are:

• A. Interior angles of a triangle add up to ${180}^o$.
• B. Two parallel lines never cross each other.
• C. The shortest path between two points is always a straight line joining the two points.
• D. All of the above.

Answer 1

The correct option is D All of the above.

Plane geometry is also called 2D geometry. Here, all the constructions, figures and the properties of objects exist on two-dimensional plane. Hence, all the given options are true.