Circles TEST Acc Geo 24 25

Front

What is the formula for calculating the arc length of a circle?

Back

Arc Length = (θ/360) * C, where θ is the angle in degrees and C is the circumference.

Front

How do you find the circumference of a circle given the diameter?

Back

Circumference (C) = π * d, where d is the diameter.

Front

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

Back

Diameter (d) = 2 * Radius (r).

Front

If the circumference of a circle is 24 cm, what is the radius?

Back

Radius (r) = Circumference / (2 * π) = 24 / (2 * π) ≈ 3.82 cm.

Front

What is the measure of a full circle in degrees?

Back

A full circle measures 360 degrees.

Front

How do you convert degrees to radians?

Back

Radians = Degrees * (π/180).

Front

What is the measure of a semicircle in degrees?

Back

A semicircle measures 180 degrees.

Front

If the measure of angle 1 is 51 degrees, what is the measure of its supplementary angle?

Back

Supplementary angle = 180 - 51 = 129 degrees.

Front

What is the formula for the area of a circle?

Back

Area = π * r^2, where r is the radius.

Front

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

Back

Arc Length = r * θ (in radians).