The light covers 1/8 of the circle since 45° is one-eighth of 360°.

The light covers half the circle since 45° is close to 90°.

The light covers the entire circle since it keeps rotating.

The light covers an arc based on how far the beam reaches, not its angle.

The arc also measures 30° because the intercepted arc equals the central angle.

The arc measures 60° because it’s double the central angle.

The arc measures 15° because it’s half the central angle.

The arc depends only on the radius, not the angle.

It is a radius because it connects the center to a point on the circle.

It is a chord since it lies completely inside the circle.

It is a diameter because it passes through two points.

It is a tangent because it touches the circle at only one point.

Chord

Radius

Diameter

Tangent

It is a secant because it cuts through the circle twice.

It is a chord because it lies within the circle.

It is a tangent because it touches the circle at exactly one point.

It is a radius because it connects to the center.

One-fourth of the circle

One-half of the circle

One-third of the circle

The entire circle

It represents the radius of the park.

It represents the diameter of the park.

It represents a tangent to the park.

It represents the chord of the park.

Radius

Chord

Diameter

Tangent

Use the distance formula: subtract x’s and y’s, square, add, then take the square root.

Add the x’s and y’s together and divide by 2.

Multiply the differences of x and y.

Subtract the smaller coordinates from the larger and divide by 2.

Find the average of the x-coordinates and the average of the y-coordinates.

Subtract the smaller coordinates from the larger and divide by 2.

Add all coordinates and divide by 4.

Multiply both coordinates by ½ to get the midpoint.