Question

How many points are shared by concentric circles?

a. 0
b. 1
c. 2
d. infinite points

Answer 1

Option a. 0

Explanation:

As we know if we draw two circles with same center but with the different radii, they neither touch each other nor intersect. This is true not only for two circles but for infinite number of the circles having the same center. They never have the common points to share. Set of points lying on each concentric circles are different.

Therefore Option a. 0 points is the correct answer.

Answer 2

Zero! Concentric circles all share the same center or middle point. This means there is one outer circle and infinite circles inside of it but they never touch one another.