# Equations of Circles

Which of the following is the definition of a circle?

Select all that apply

- A
- B
- C
- D

Which of the following is the definition of a radius?

Select all that apply

- A
- B
- C
- D

Which of the following is the definition of a center of circle?

Select all that apply

- A
- B
- C
- D

Which of the following is the definition of a diameter?

Select all that apply

- A
- B
- C
- D

## Use this equation to answer the following questions.

## What is the center and radius of the following circle?

## What is the center and radius of the following circle?

## What is the center and radius of the following circle?

## Use this equation to answer the following questions.

## What is the equation for the circle with the given center and radius?

Center: (3,4) Radius: 5

## What is the equation for the circle with the given center and radius?

Center: (7,-2) Radius: 9

## What is the equation for the circle with the given center and radius?

Center: (1,1) Radius: 1

## What is the equation for the circle with the given center and radius?

Center: (0,0) Radius: 10

What is the equation of the circle graphed above?