" hord of the com tangents to circles which touch each other at "C" ,"

The two circles touch each other if

In the adjoining figure angleACE is a right angle there are three circles which just touch each other and AC and EC are the tangents to all the three circles. What is the ratio of radii of the largest circle to that of the smallest circle?

Two circles touch each other at the point R. PQ is a common tangent to both the circle which touches the circle at the points P and Q. Then anglePRQ=

The minimum number of common tangents drawn to two circles when both circles touch each other externally is___

In the figure, the circles with centeres A and B touch each other at E. Line l is a common tangent which touches the circles at C and D respectively. Find the length of seg CD, if the radii of the circle are 4 cm, 6 cm.

How many common tangents can be drawn when two circles touch each other internally.

The number of common tangents of two circle when they do not touch or intcrsect each other is _____