Circle Geometry

What is the diameter of the circle?

• 8 cm

• 16 cm

• 10 cm

• 4 cm

What is the radius of the circle?

• 18 ft

• 72 ft

• 36 ft

• 14 ft

The distance all the way around the circle is called the

• chord

• diameter

• circumference

• area

The red line is the _______ of the circle

• Radius

• Diameter

The red line is the _______ of the circle

• Radius

• Diameter

If you are given the diameter, how can you calculate the radius?

• Multiply by 2

• Divide by 2

Distance from the centre to a point on a circle

• tangent

• chord

• diameter

• radius

Distance across a circle that passes through the centre

• diameter

• radius

• chord

• tangent

Line segment connecting 2 points on a circle; may or may not pass through the centre of the circle

• tangent

• secant

• chord

• diameter

A line that touches a circle at just 1 point

• tangent

• chord

• circumference

• radius