Circles TEST Acc Geo 24-25

Front

What is the measure of a semicircle?

Back

180 degrees.

Front

What is the definition of a diameter in a circle?

Back

A diameter is a segment that passes through the center of the circle and has its endpoints on the circle.

Front

Back

Angles inscribed in a semicircle are right angles (90 degrees).

Front

How do you calculate the measure of an arc in a circle?

Back

The measure of an arc can be calculated using the formula: Arc Measure = (Central Angle/360) * Circumference.

Front

What is the formula for the circumference of a circle?

Back

Front

If the circumference of a circle is 50 cm, how do you find the diameter?

Back

Use the formula: Diameter = Circumference / π. Thus, Diameter = 50 / π ≈ 15.9 cm.

Front

What is the relationship between the diameter and radius of a circle?

Back

The diameter is twice the length of the radius. Diameter = 2 * Radius.

Front

What is the formula for the area of a circle?

Back

Front

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

Back

Arc Length = (Angle/360) * Circumference, where Circumference = 2 * π * Radius.

Front

Back

m∠EAB = 116 degrees.