5/8/2019 PA 7 Do Now - Circles

The number pi ________________

• has only 3 digits
• never ends  &  never repeats 
• ends eventually
  (it is just a really long number)

The number pi is approximately equal to _________. 

• 3.14
• 3
• whatever the diameter equals 

A point that is equidistant to any point on the circle is called the

• radius
• diameter
• circumference
• center

A circular swimming pool is 21 feet in diameter.
How many feet around is the pool?

• 10.5 ft
• 42 ft
• 65.97 ft
• 131.95 ft

What do you call the distance around the circle

• the perimeter
• the area
• pi
• the circumference

The radius is....

• a line that crosses through the center and touches each edge 
• the center point of a circle 
• a line from the center point to the edge of the circle
• an element in science

The space that occupies the inside of a circle is called the

• radius
• circumference
• diameter
• area

A circle is not a polygon because

• it is a closed figure
• it is not made of straight lines
• it has an area
• none of the answers

A line that goes from one end of the circle to the other and crosses the center point is...

• center
• diameter
• circumference
• radius

What is the radius of this circle?

• 18 in
• π in
• 9 in
• 8 in