Question

Which of the following is correct about two concentric circles?

• A. Concentric circles have 2 common tangents.
• B. The inner circle has a radius greater than the radius of the outer circle.
• C. Concentric circles cannot have common tangents.
• D. None of the above

Answer 1

The correct option is C Concentric circles cannot have common tangents.

Concentric circles cannot have common tangents, as a tangent that originates from the circumference of the inner circle, becomes a chord or secant for the outer circle.