Question

If two circles touch each other externally, then what is the number of common tangents?

• A. 1
• B. 2
• C. 3
• D. 4

Hint:

For two externally touching circles, there are 4 common tangents: 2 external and 2 internal tangents.

Answer 1

The Correct Option is D

Step 1: When two circles touch each other externally, there are four common tangents: - Two external tangents - Two internal tangents Thus, the number of common tangents is 4. Thus, the correct answer is \( \boxed{4} \).