Circles Quiz (5 Questions)

1. Find the center and radius of (x + 1)² + (y − 2)² = 25

2. True or False: All points on a circle are the same distance from the center

3. Write the equation of a circle with center at (0,0) and radius 5

4. What is the radius of (x − 3)² + (y + 4)² = 36

5. Is (2,1) on the circle (x − 1)² + (y − 2)² = 5?

Answer Key

1. Center: (−1, 2), Radius: 5

2. True

3. x² + y² = 25

4. 6

5. Check: (2−1)² + (1−2)² = 1 + 1 = 2 → Not on the circle