1. Two circles have a common internal tangent. The distance between the centers of two circles is 13. The radius of one of the circles is 1. The radius of the other circle is 4. Find the length of the common internal tangent. 2. Find CD :Given the tangent lines and the information below. 12
B
F
C
E
13
G
A
H
D
16
1
3.
Find the length of each circle's radius.
C
A
B
4. The distance between the centers of these circles is 25 units. Find the length of the common tangent. 6
9
2
5. A quadrilateral is inscribed in a circle. Its vertices divide the circle into four arcs in the ration 1:2:5:4. Find the measures of the angles of the quadrilateral. 3