Vocabulary
Radius/ diameter
Classify/ name
Perimeter
Circumference
100
This is the length around a shape.
Perimeter
100
The radius of a circle is 7 feet, what is its diameter?
14 feet
100
What do you call an angle that is exactly 180 degrees?
A straight angle
100
How do you find perimeter?
Add up all the side lengths
100
What is the formula for circumference?
C= pi x d
200
This is the length, or perimeter, around a circle.
Circumference
200
The diameter of a circle is 76 meters, what is its radius?
38 meters
200
What is the name of a quadrilateral with EXACTLY one pair of parallel sides?
trapezoid
200
What is the perimeter of this shape?
13 inches
200
How do you find circumference if the radius is given?
Double the radius and multiply by pi
300
These special intersecting lines create 90 degree angles.
Perpendicular lines
300
The radius of a circle is 124 inches. What is its diameter?
248 inches
300
What kind of triangle has NO congruent sides?
scalene
300
What is the perimeter of this shape?
40 inches
300
What is the circumference of a circle with radius 4 feet?
25.12 feet
400
These lines go in the same direction and NEVER touch.
Parallel lines
400
The radius of a circle is 14.67 centimeters. What is the diameter?
29.52 centimeters
400
What do the angles of a triangle add up to?
180 degrees
400
What is the perimeter of a regular octagon with a side length of 7 meters?
56 meters
400
What is the circumference of a circle with diameter 11 inches?
35.54 inches
500
What is the difference between a radius and a diameter?
What is the same?
A radius is half the diameter.
They both touch the CENTER of the circle.
500
The radius of a bike wheel is 6 inches. What is the combined length of the diameters of BOTH of the bike wheels?
24 inches
500
Classify this shape as many ways as possible :
Quadrilateral, parallelogram, rhombus
500
What is the perimeter of this polygon?
32 in
500
The radius of a Ferris wheel is 20 feet. How many feet of lights will I need to wrap them around the Ferris wheel once?
125.6 feet