Polygons
A 3 sided polygon
triangle
The radius is 6.5 cm. What is the diameter?
13 cm
My diameter is 64 cm. What is my radius?
32 cm
An 8 sided polygon
octagon
If a circle is the same size, which is longer?
Radius or Diameter
Diameter
A 4 sided polygon
quadrilateral
DOUBLE JEOPARDY!!
The radius is 99 cm. What is the diameter?
198 cm
The diameter is 280 cm. What is the radius?
140 cm
DOUBLE JEOPARDY!!
A 9 sided polygon
nonagon
The radius goes from the circumference to ...
Center of the circle
DOUBLE JEOPARDY!!
A 5 sided polygon
pentagon
The radius is 264 cm. What is the diameter?
528 cm
DOUBLE JEOPARDY!!
The diameter is 164cm. What is the radius?
82 cm
An 11 sided polygon
undecagon
The diameter must pass through...
The center of the circle
A 6 sided polygon
hexagon
DOUBLE JEOPARDY!!
The radius is 985 in. What is the diameter?
1,970 in
DOUBLE JEOPARDY!!!
My diameter is 25in. What is my radius?
12.5in
A 12 sided polygon
dodecagon
At a constant speed, I can swim to the middle of my pool in 20 seconds. Going the same speed and passing through the center, how long would it take me to swim from one side of the pool to the other?
40 seconds
A 7 sided polygon
heptagon
The radius is 1,537 yds. What is the diameter?
3,074 yds
My diameter is 8.5cm. What is my radius?
4.25cm
Name a polygon in the quadrilateral family
DOUBLE JEOPARDY!! My float is in the middle of my 45 feet wide round pool. To get my float, I need to swim from the edge of the pool to the float. Before I can jump in, Mean Kim swims from the edge of the pool, grabs my float, and brings it to the opposite side of the pool.
1) How far was I away from my float?
2) How far did Mean Kim swim?
1) 22.5 feet
2) 45 feet