12.1 Practice Problems

Which is a diameter of the circle?

• BC

• DE

• AD

• line m

Select ALL of the line segments that are chords

• DE

• BC

• line m

• AC

• AB

Select ALL of the line segments that are radii of the circle

• BC

• AB

• AC

• DE

• line l

Which line is a secant?

• line m

• line l

• BC

• DE

Line l is a ...

What is the length of the radius of ⊙P?

What is the length of the radius of ⊙Q?

Tags

CCSS.6.G.A.3

What is the point of tangency of the two circles?

• (2, 4)

• (4, 2)

• (4, 0)

• (0, 2)

Tags

CCSS.HSG.GPE.A.1

What is the equation of the tangent line?

• $y=4$

• $x=4$

• $y=x+4$

• $y=4x$

Amiko is riding her bike on a wet street. As the bike wheel spins, water drops are sprayed off tangent to the wheel. Amiko’s bike wheels have a radius of 12 inches. Use the Pythagorean Theorem to find the distance the water drops have been sprayed when they are 13 inches from the center of the wheel.

Tags

CCSS.HSG.C.A.2