Circle Vocab Intro

What is the radius?

• 18

• 72

• 38

• 14

What is the diameter?

• 8

• 16

• 10

• 4

Is the red line a radius or diameter of the circle?

• Radius

• Diameter

The distance across the circle through the center is called the...

• radius

• diameter

• circumference

• area

Match the following vocabulary term with its appropriate part of the circle.

• Secant Line

• Point V

• Minor Arc

• Line PR

• Point of Tangency

• Semi-Circle

• Major Arc

If you multiply 2 × r  then you will get the...

• radius

• diameter

• circumference

• area

If a circle has a radius of 10 ft. then which statement is true?

• The radius is 5 ft. 

•  The diameter is 5 ft

• The radius is 20 ft.

• The diameter is 20 ft.

What is the area of this circle?

• 1256.64

• 31.41

• 314.16

• 123.12

What is the area of this circle?

• 452.39

• 139.12

• 113.1

• 84.23

A segment that connects the center of a circle with a point on the circle.

• tangent

• secant

• diameter

• radius