Tangent Lines Reteach

Tangent Lines Reteach

By Andrew Schmitt

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​Review of Tangent Lines

Multiple Choice

• Yes, Pythagorean theorem shows that it is a right triangle.

• No, not enough information

• Yes, Soh-Cah-Toa tells us it is a right triangle.

• No, we don't have the radius.

• No, Pythagorean Theorem shows it is not a right triangle.

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​Answer Explanation

Fill in the Blanks

Answer Explanation​

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Fill in the Blanks

Multiple Choice

Assume that lines that appear to be tangent are tangent. O is the center of the circle. What is the value of x?

• 90

• 309

• 129

• 39

Multiple Choice

A point B is 17cm away from the centre O of a circle. AB is the tangent to the circle at A. Given that AB = 15 cm, find the radius of the circle.

• 8 cm

• 9 cm

• 2 cm

• 16 cm

Fill in the Blanks

Multiple Choice

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

Multiple Choice

Assume that lines that appear to be tangent are tangent. O is the circle. What is the value of x?

• 90

• 140

• 220

• 360

Multiple Choice

The polygon circumscribes a circle. What is the perimeter of the polygon?

• 82

• 32

• 21

• 42

Multiple Choice

Assume that all the lines that appear tangent are tangent. Find the perimeter

• 54
• 36
• 48
• 42