Geometry B Circles Test Review

Front

What is a major arc in a circle?

Back

A major arc is the larger arc connecting two points on a circle, which measures more than 180 degrees.

Front

What is a tangent line?

Back

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

Front

How do you calculate the area of a sector?

Back

The area of a sector can be calculated using the formula: \( \text{Area} = \frac{\theta}{360} \times \pi r^2 \), where \( \theta \) is the angle in degrees and \( r \) is the radius.

Front

What is a chord in a circle?

Back

A chord is a line segment whose endpoints lie on the circle.

Front

What is the general form of the equation of a circle?

Back

The general form of the equation of a circle is: \( x^2 + y^2 + Dx + Ey + F = 0 \), where D, E, and F are constants.

Front

What is a semi-circle?

Back

A semi-circle is half of a circle, formed by a diameter and the arc connecting its endpoints.

Front

What is a minor arc?

Back

A minor arc is the smaller arc connecting two points on a circle, which measures less than 180 degrees.

Front

What is the relationship between a radius and a diameter?

Back

The diameter of a circle is twice the length of the radius.

Front

How do you find the circumference of a circle?

Back

The circumference can be calculated using the formula: \( C = 2\pi r \), where \( r \) is the radius.

Front

What is the formula for the area of a circle?

Back

The area of a circle is given by the formula: \( A = \pi r^2 \), where \( r \) is the radius.