Geometry: Arcs and Angles

Front

What is a central angle?

Back

An angle whose vertex is at the center of a circle and whose sides are radii that intersect the circle.

Front

What are minor and major arcs?

Back

Minor arcs are arcs that are smaller than a semicircle, while major arcs are larger than a semicircle.

Front

How is arc measure defined?

Back

Arc measure is the degree measure of the central angle that intercepts the arc.

Front

What is arc length?

Back

Arc length is the distance along the arc between two points on the circle.

Front

What is the formula for the area of a sector?

Back

The area of a sector is given by the formula A = (n/360) * πr², where n is the central angle in degrees and r is the radius.

Front

What is the formula for arc length?

Back

s = n/360 * 2πr, where n is the central angle in degrees and r is the radius