Properties of Tangent Lines

Which best describes line AB?

• chord

• secant

• tangent

• diameter

Find the length of the missing segment.

• 12

• 34

• 169

• 13

How can we solve for x in this example?

• add both expressions together and subtract from 360

• set both expressions equal to each other

• use Pythagorean Theorem

• use magic

• combine like terms

Find the value of x.

Find the value of x.

• 4.94

• 6.94

• 8.94

• 2.94

What is the point of contact between a tangent and a circle?

• A point of tangency

• A tangent

• A center

• Outside of circle C

Two tangents CD and CB intersect circle A. Find the length of the tangent segment BC.

• 2

• 3

• 9

• 14

Determine if line AB is tangent to the circle. Type your answer below and EXPLAIN HOW YOU KNOW. This should be a full sentence using the vocabulary we have discussed.

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Find the angle measure indicated. Assume that lines which appear to be tangent are tangent.

• 131°

• 121°

• 102°

• 144º

Find the angle measure indicated. Assume that lines which appear to be tangent are tangent.

• 31°

• 41°

• 78°

• 69º