Homework - Parts of a Circle

Front

What is the diameter of a circle?

Back

The diameter is the distance across a circle through its center, equal to twice the radius.

Front

What is the relationship between radius and diameter?

Back

The diameter is twice the length of the radius (Diameter = 2 x Radius).

Front

What is a chord in a circle?

Back

A chord is a line segment that connects two points on the circumference of a circle without passing through the center.

Front

What is the circumference of a circle?

Back

The circumference is the distance around the circle, calculated as C = π x Diameter.

Front

What is a tangent in relation to a circle?

Back

A tangent is a line that touches the circle at exactly one point and does not cross it.

Front

What is an arc in a circle?

Back

An arc is a portion of the circumference of a circle.

Front

What is a sector in a circle?

Back

A sector is a region enclosed by two radii and the arc between them.

Front

What is the formula for the area of a circle?

Back

The area of a circle is calculated as A = π x Radius².

Front

If the radius of a circle is 8 in, what is the diameter?

Back

The diameter is 16 in.

Front

What do we call the longest chord in a circle?

Back

The longest chord in a circle is called the diameter.