WorksheetsTangents to a Circle Review
Total questions: 24
Worksheet time: 48mins
A tangent line intersects the circle ...
in exactly two points
in exactly one point
through the center
with the diameter
Which shows a tangent line?
Which shows a tangent line?
If a line is tangent to a circle, then it is ________ to the radius drawn to the point of tangency.
parallel
adjacent
supplementary
perpendicular
If two segments from the same external point are tangent to a circle, then they are______.
Supplementary
Congruent
Complimentary
Determine if a tangent line is shown in the picture.
Yes
No
Not Sure
Determine if a tangent line is shown in the picture.
Yes
No
Not sure
Assume that the lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x to the nearest tenth.
11.7
10.8
13.0
14.2
Assume that the lines that appear to be tangent are tangent. O is the center of the circle. Find the value of x to the nearest tenth.
4.1
5.8
4.7
3.6
What is the value of x to the nearest tenth?
10.7
114.5
64.2
5.35
Segment ED is tangent to circle O. What is the value of x?
*Hint: All the angles in a triangle make 180 degrees, and because DE is a tangent line, the angle at D is 90 degrees!
232
52
79
115
Assume both lines are tangent to circle O. What is the value of x?
90
115
120
45
6.32
1.41
Circles add to how many degrees?
180º
360º
520º
300º
A line that touches (intersects) the circle only once from the outside.
Secant
Chord
Tangent
Line
If AB=8, AE=19, and CE=17, what is the measure of segment BC?
6 units
8 units
8.5 units
11 units
The polygon circumscribes a circle. What is the perimeter of the polygon? Type the number only.
70mm
50mm
120mm
85mm
Assume that all the lines that appear tangent are tangent. Find the perimeter
54
30
24
18
Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?
45
20
55
40
Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x? Type the number only.
(a)
Assume that lines that appear to be tangent are tangent. O is the circle. What is the value of x?
90°
80°
140°
220°
