Week 13 Test

Front

What is a central angle?

Back

A central angle is an angle whose vertex is at the center of a circle.

Front

What is a chord in a circle?

Back

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

Front

How do you calculate 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 value of a full circle in degrees?

Back

A full circle is 360 degrees.

Front

What is the definition of a radius?

Back

A radius is the line segment from the center of the circle to any point on the circle.

Front

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

Back

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

Front

What is the formula for the area of a circle?

Back

The area of a circle is given by the formula A = πr², where r is the radius.

Front

What is the term for the distance around a circle?

Back

The distance around a circle is called the circumference.

Front

What is the difference between a chord and a diameter?

Back

A chord is any line segment with endpoints on the circle, while a diameter is a specific chord that passes through the center of the circle.

Front

How many radians are in a full circle?

Back

There are 2π radians in a full circle.