11.1 Review Worksheet
11.1.1 Lines that Intersect Circles Identify each line or segment that intersects each circle. 1. l 2.
D
A
S
E
P
V
B
F
W
C
R
Find the length of each radius. Identify the point of tangency and write the equation of the tangent line at this point. 3. y 4. y
4
3
M
C D
x
x
–3
3
–4
4
N
–3
–4
5. Olympus Mons’s peak rises 25 km above the surface of the planet Mars. The diameter of Mars is approximately 6794 km. What is the distance from the peak of Olympus Mons to the horizon to the nearest kilometer?
The segments in each figure are tangent to the circle. Find each length. 6. AB B A 2 x 2 7. RT S
y
Q
8 x
R
D
y 2 7
C
T
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