Geometry Big Ideas

Name the tangent line. 

• s
• WR
• VT
• QR

Name the secant(s).

• WR
• VT
• s
• QR

What can you conlude?

• AB and AC are not congruent.
• AB= half of AC
• AC = half of AB
• AB=AC

What can you conclude from the picture?

• m is parallel to circle C
• m is skew to circle C
• m bisects circle C
• m is tangent to circle C

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

• Parallel
• Skew
• Perpendicular
• Bisecting

____ circles are coplanar circles with the same center.

• Congruent
• Coplanar
• Concentric
• Tangent

What is AD called?

• Radius
• Secant
• Tangent
• Diameter

Tell whether AB is tangent to C

• yes

• no

Point B is a point of tangency, Find the radius r of circle C.

• 20

• 10

• 12

• 8

Points B and D are points of tangency. Find the values of x.

• 3

• 4

• 5

• 6