Question

Which of the following pair(s) of circles have l as a common internal tangent? Select ALL that apply.

A and B
A and C
B and C

Answer 1

we know that
Two circles in the same plane are internally tangent if they intersect in exactly one point and the intersection of their interiors is not empty. 

case (A and B)--------> are externally tangent
case (A and C)--------> are externally tangent
case (B and C)--------> are internally tangent

therefore

the answer is
the option B and C

Answer 2

Answer:

A & B

A & C

Step-by-step explanation:

Since the question asks for an internal tangent, we must review its definition. An internal tangent is a common tangent intersecting the line segment joining the centers of circles.

According to the graph, the answers would be the above.

Hope it helps.