12-1 Tangent Lines

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

(a)  

• 39
• 90
• 309
• 129

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

• 20
• 160
• 70
• 90

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

• 140
• 90
• 220
• 360

In each circle, what is the value of x to the nearest tenth? (a)  

• 3.75
• 4.25
• 14.10
• 6.25

What is the value of x to the nearest tenth? (a)  

• 10.7
• 114.5
• 64.2
• 5.35

Determine whether a tangent line is shown in the diagram. (Hint: Use the Pythagorean Theorem) (a)  

• Yes
• No
• maybe
• I don't know

Determine whether a tangent line is shown in each diagram. (Use the Pythagorean Theorem) (a)  

• Yes
• No
• maybe
• I don't know

What is the value of x?

Find the perimeter of the quadrilateral.

• A
• B
• C
• D

Find the value of X