Pi & Math Antics

What is a circle defined as in geometry?

• A shape with one curved line

• A polygon with infinite sides

• The set of all points equidistant from another point

• A shape with four equal sides

What is the center of a circle?

• The point exactly in the middle of the circle

• The outer edge of the circle

• The point that is furthest from the circle

• A point outside the circle

How many radius lines can you draw in a circle?

• Two

• As many as you want

• Only one

• None

What is the diameter of a circle?

• The distance from one side of the circle to the other, passing through the center

• Twice the radius

• Half the distance around the circle

• The distance around the circle

What special name is given to the perimeter of a circle?

• Circumference

• Diameter

• Radius

• Area

What does the Greek letter Pi represent?

• The number 3

• The diameter of a circle

• The ratio of a circle's circumference to its diameter

• The area of a circle

How many diameters does it take to go around a circle's circumference?

• 4 diameters

• 3.14 diameters

• 3 diameters

• 2 diameters

What is the value of Pi rounded off to two decimal places?

• 3.14159

• 3

• 3.1

• 3.14

What type of number is Pi classified as?

• Natural

• Whole

• Irrational

• Rational

Why do we use a symbol for Pi in equations?

• Because Pi has an infinite number of decimal places

• Because it's a Greek tradition

• Because it's easier to write

• Because it represents a circle