Circles - What is Pi?

What geometric shape has been crucial since the invention of the wheel?

• Rectangle

• Circle

• Square

• Triangle

Tags

CCSS.1.G.A.1

CCSS.2.G.A.1

In geometry, how is a circle defined?

• A shape with four equal sides

• A shape with parallel sides

• The set of all points equidistant from another point

• A polygon with three sides

Tags

CCSS.HSG.CO.A.1

What is the term for the distance from the center of a circle to any point on its perimeter?

• Diameter

• Radius

• Area

• Circumference

How is the diameter of a circle related to its radius?

• It is half the length of the radius

• It is the same length as the radius

• It is twice the length of the radius

• It is four times the length of the radius

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

• Radius

• Diameter

• Circumference

• Area

What is Pi in relation to a circle?

• The ratio of its diameter to its radius

• The ratio of its circumference to its diameter

• The ratio of its radius to its circumference

• The ratio of its area to its circumference

Tags

CCSS.7.G.B.4

What type of number is Pi classified as?

• Integer

• Whole

• Irrational

• Rational

Approximately how many diameters equal the circumference of any circle?

• 4.14

• 3.14

• 2.14

• 5.14

Tags

CCSS.HSG.GMD.A.1

Why do we use a symbol to represent Pi in equations?

• Because it's an irrational number with non-repeating decimals

• Because it's easier to write

• Because it's a whole number

• Because it changes with the size of the circle

Tags

CCSS.HSG.GMD.A.1

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

• 3.16

• 3.14

• 3.13

• 3.15

Tags

CCSS.HSG.GMD.A.1