Circles- Radius & Diameter

Front

What is the distance from the center of a circle to any point on the circle called?

Back

Radius

Front

What is the distance across a circle through its center called?

Back

Diameter

Front

If the radius of a circle is 5 cm, what is the diameter?

Back

10 cm

Front

What is the formula to calculate the circumference of a circle?

Back

Circumference = 2 × π × radius

Front

What is the relationship between radius and diameter?

Back

Diameter = 2 × Radius

Front

If a circle has a diameter of 12 cm, what is the radius?

Back

6 cm

Front

What do you call a line segment that connects two points on the circle but does not pass through the center?

Back

Chord

Front

Is a diameter also a chord?

Back

Yes, a diameter is a special type of chord that passes through the center.

Front

What is the term for the distance around the circle?

Back

Circumference

Front

If the radius of a circle is doubled, what happens to the diameter?

Back

The diameter also doubles.