Review Circles 2022

Front

What is a Minor Arc?

Back

A Minor Arc is a portion of a circle that is smaller than a semicircle, defined by two endpoints on the circle.

Front

How do you find the angle of an arc when the arc length and radius are given?

Back

Use the formula: Arc Length = (Angle in degrees / 360) * (2 * π * Radius).

Front

What is the formula for the area of a sector?

Back

Area of a Sector = (Angle in degrees / 360) * π * (Radius)².

Front

What is the relationship between diameter and radius?

Back

The radius is half of the diameter. If the diameter is 8 cm, the radius is 4 cm.

Front

How do you set up to find the angle of a sector when the area and radius are known?

Back

Use the formula: Area = (Angle in degrees / 360) * π * (Radius)².

Front

What is a Major Arc?

Back

A Major Arc is a portion of a circle that is larger than a semicircle, defined by two endpoints on the circle.

Front

What is a Semicircle?

Back

A Semicircle is half of a circle, formed by a diameter and the arc connecting the endpoints of the diameter.

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2 * π * Radius.

Front

How do you calculate the length of an arc?

Back

Arc Length = (Angle in degrees / 360) * Circumference.

Front

What is the formula for finding the area of a circle?

Back

Area = π * (Radius)².