Circle Equation Review

Front

What is the standard form of a circle's equation?

Back

Front

How do you find the center of a circle from its equation?

Back

Front

Back

The radius of the circle is r, which is the square root of the right side of the equation.

Front

What does it mean if a point is inside a circle?

Back

A point (x, y) is inside a circle if the distance from the center to the point is less than the radius.

Front

What does it mean if a point is outside a circle?

Back

A point (x, y) is outside a circle if the distance from the center to the point is greater than the radius.

Front

What does it mean if a point is on a circle?

Back

A point (x, y) is on a circle if the distance from the center to the point is equal to the radius.

Front

How do you determine if a point is inside, outside, or on a circle?

Back

Substitute the point's coordinates into the circle's equation and compare the result to r^2.

Front

What is the equation of a circle with center (0, 0) and radius 5?

Back

Front

What is the equation of a circle with center (3, -4) and radius 8?

Back

Front

How do you convert the general form of a circle's equation to standard form?

Back