Unit 6 (Circles) Review

Front

What is the measure of an internal angle in a circle?

Back

The measure of an internal angle can vary, but in the context of the quiz, it is 46 degrees.

Front

What is a secant line?

Back

A secant line is a line that intersects a circle at exactly two points.

Front

How do you calculate the area of a shaded sector of a circle?

Back

The area of a shaded sector can be calculated using the formula: Area = (θ/360) * π * r², where θ is the central angle in degrees and r is the radius.

Front

What is a major arc?

Back

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

Front

What is the Pythagorean Theorem?

Back

The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (c) is equal to the sum of the squares of the lengths of the other two sides (a and b): a² + b² = c².

Front

What is the formula for the circumference of a circle?

Back

The circumference of a circle can be calculated using the formula: C = 2πr, where r is the radius.

Front

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

Back

The diameter of a circle is twice the length of the radius: d = 2r.

Front

What is a tangent line?

Back

A tangent line is a line that touches a circle at exactly one point.

Front

What is the area of a circle?

Back

The area of a circle can be calculated using the formula: A = πr², where r is the radius.

Front

What is the difference between a minor arc and a major arc?

Back

A minor arc is an arc that is smaller than a semicircle, while a major arc is larger than a semicircle.