# Worksheet: Equation of a Circle Passing through Three Noncollinear Points

In this worksheet, we will practice finding the equation of a circle passing through three noncollinear points that form a right triangle.

**Q7: **

The coordinates for three of a group of aerialists in a circular formation are , , and . If each unit represents 1 foot, determine the diameter of their circular formation.

**Q16: **

How many circles can pass through three vertices of a parallelogram?

**Q17: **

Find the general equation of the circle if the circle touches the -axis at and intersects the -axis at and .

- A
- B
- C
- D