Parts of a Circle

Front

The distance all the way across the circle, but through the center, is called the...

Back

Diameter

Tags

CCSS.HSG.C.A.2

Front

What is the line segment that connects the center of the circle to any point on the circle?

Back

Radius

Front

What is the distance around the circle called?

Back

Circumference

Front

What is the area of a circle with a radius of 5 units?

Back

Area = π * r² = π * 5² = 25π square units

Tags

CCSS.7.G.B.4

Front

What is the center of a circle?

Back

The point that is equidistant from all points on the circle.

Front

If the diameter of a circle is 10 units, what is the radius?

Back

Radius = Diameter / 2 = 10 / 2 = 5 units

Tags

CCSS.7.G.B.4

Front

What is the formula for the circumference of a circle?

Back

Circumference = 2πr or πd

Tags

CCSS.7.G.B.4

Front

If a circle has a circumference of 31.4 units, what is the radius?

Back

Radius = Circumference / (2π) = 31.4 / (2π) = 5 units

Tags

CCSS.7.G.B.4

Front

What is the relationship between diameter and radius?

Back

Diameter = 2 * Radius

Tags

CCSS.7.G.B.4

Front

What is segment AB if it passes through the center and touches two points on the circle?

Back

Diameter