| word |
 |
|
| definition |
|
|
| diameter |
the distance across a circle through the center. |
| radius |
The distance from the center of a circle to any point on the circle. |
| chord |
A line segment that joins two points on a curve. |
| center |
A circle is named by this. |
| central angle |
An angle whose vertex is the center of a circle. |
| Area of a circle formula |
II x r x r |
| Circumference of a circle formula |
II x d |
| Circumference |
The distance AROUND a circle |
| Area of a circle |
The amount of space taken up inside of a circle |
| To find the radius when given a diameter |
Multiply the diameter by .5 |
| II x d is also |
2 x II x r |
| 1/2 also equals |
.5 |
5th Grade Science
