Circle Review Part 1 (7.1-7.4)

Front

What is the diameter of a circle?

Back

The diameter is the longest chord of a circle, passing through the center and connecting two points on the circumference.

Front

What is the perimeter of a circle?

Back

The perimeter of a circle is called the circumference.

Front

What is the formula for the circumference of a circle?

Back

The formula for the circumference (C) is C = 2πr, where r is the radius.

Front

What is a major arc in a circle?

Back

A major arc is an arc that is larger than a semicircle.

Front

What is a minor arc in a circle?

Back

A minor arc is an arc that is smaller than a semicircle.

Front

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

Back

The diameter is twice the length of the radius (d = 2r).

Front

How do you find the length of an arc?

Back

The length of an arc can be found using the formula: Length = (θ/360) * C, where θ is the angle in degrees and C is the circumference.

Front

What is the measure of a central angle in a circle?

Back

A central angle is an angle whose vertex is at the center of the circle and whose sides are radii.

Front

What is the relationship between inscribed angles and intercepted arcs?

Back

The measure of an inscribed angle is half the measure of its intercepted arc.

Front

What is the formula for the area of a circle?

Back

The formula for the area (A) is A = πr², where r is the radius.