Question

Which undefined term is needed to define a circle

Answer 1

The variable pi (π). It is an infinitely long number, so it cannot accurately be defined. It is used to describe the curvature of a circle, thus why it is used when finding the circumference and area of a circle.

Answer 2

Point took the test and got it right

Explanation:

A. Point

B. Radius

C. Line

D. Ray