# Working with Circles Test

#### Choose the best answer.

**1.** Which points of a circle are on the same plane?

**2.** In a circle, a radius

**3.** Congruent circles

#### Use the figure below to answer question 4.

**4.** Which point(s) is an exterior point?

**5.** •A lies 12 inches from the center of P. If P has a 1-foot radius. •A lies

**6.** A diameter is also

**7.** Both tangents and radii

**8.** From a stationary point, Billy throws four balls in four directions. Where each ball lands determines the radius of another circle. What do the four circles have in common?

**9.** Which circle is NOT congruent?

**10.** In which figure is the set of arcs not congruent?

#### Choose the best answer.

**11.** What is the circumference of the figure below?

**12.** What is the area of the figure below?

**13.**

**14.** The area of a square is 484 square feet. What is the maximum area of a circle inscribed in the square?

**15.** If the circumference of a circle is 192π feet, then the length of the circle's radius is

**16.** If the area of a circle is 289π square feet, then the length of the circle's radius is

**17.** What is the area of a circle inscribed in a dodecagon with an apothem 13 meters long?

**Use the figure below to answer questions 18 through 19.**

**18.** The arc BD is a quarter of the circumference of C. If the total
circumference of C is 64π feet, then what is the length of the arc BD?

**19.** What is the central angle that intercepts the arc BD?

**20.** What is the area of the shaded figure?

#### Use the figure below to answer questions 22 through 23.

**21.** What is the area of the shaded figure?

**22.** What is the ratio of the area of circle M and the area of circle K?