Tangent in Circle

If a line is tangent to a circle, then it is ________ to the radius drawn to the point of tangency.

• parallel

• adjacent

• supplementary

• perpendicular

Using lines tangent to the circle, find the value of x.

• 57

• 137

• 47

• 257

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

Which shows a tangent line?

• 
• 
• 
• 

Knowing that line AF is a tangent, C is the center of the circle, and angle F is 29.0 degrees, what is the measure of angle ECD?

• 54

• 90

• 306

• 126

Line ST is a tangent to the circle at point P. What is the measure of angle (x + y)?

• 79

• 80

• 86

• 90

Which of the following lines intersects a circle only ONCE?

• Chord

• Tangent

• Secant

• Diameter

Is the given segment tangent to circle K?

• Yes

• No

Is BD tangent to the circle?

• Yes

• No