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Tangent Lines Worksheet

Explore the properties of tangent lines to circles with this Grade 9 math worksheet, covering definitions, theorems, and problem-solving.

Grade 9 Math GeometryTangent Lines
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Includes

Multiple ChoiceFill in the Blanks2 Short AnswerTrue / False

Standards

CCSS.MATH.CONTENT.HSG.C.A.2

Topics

mathgeometrytangent linescirclesgrade 9
7 sections · Free to use · Printable
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Tangent Lines Geometry

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Read each question carefully and answer to the best of your ability. Show all your work for full credit.

1. What is a tangent line to a circle?

a

A line that intersects the circle at two points.

b

A line that passes through the center of the circle.

c

A line that intersects the circle at exactly one point.

d

A line segment connecting two points on the circle.

2. The radius drawn to the point of tangency is   to the tangent line.

3. If two tangent segments are drawn to a circle from the same external point, then the segments are  .

4. In the diagram below, line AB is tangent to circle O at point A. If the radius of circle O is 5 cm and the distance from O to B is 13 cm, find the length of AB.

OAB5 cm13 cm

5. A secant line intersects a circle at exactly one point.

T

True

F

False

6. Two tangent segments, PT and PS, are drawn to a circle from an external point P. If PT = 3x + 2 and PS = 5x - 8, find the value of x and the length of each tangent segment.