Which of the following pair(s) of circles have / as a common external tangent? Select all that apply.
A and B
A and C
B and C

Answer with explanation:
A tangent to a circle is a Line which touches a circle at a single point.
There can be Infinite number of tangents to a circle which are external only.
In the given figure:
⇒ There are three circles having Centers A, B and C.Circle having Center B lies inside the circle having center C.
⇒The three circles intersect at point T.
⇒The common tangent of these three circles passes through Point T.
⇒Circles having Center B and Center C , have a common external Tangent.
Option A,B and C:
→A and B
→A and C
→B and C
Tangent is the line that intersects the circle at a single point. Thus, Option A, B, and C all apply.
Three different circles are given in the question that is A, B, and C.
We have to determine the pair of circles that have a common external tangent.
Therefore, take circles A and B from the given figure.
Line " L " is the common tangent to both circles. It is clear from the figure that it is an external tangent to both circles.
Hence, Option A applies.
Now, take circles A and C from the given figure.
Line " L " is the common tangent to both circles. It is clear from the figure that it is an external tangent to both circles.
Hence, Option B applies.
Further, take the circles B and C from the given figure.
Line " L " is the common tangent to both circles. It is clear from the figure that it is an external tangent to both circles.
Hence, Option C applies.
Thus, Option A, B, and C all apply.
To know more about the tangents, please refer to the link:
https://brainly.com/question/16831668