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Interactive
Circle
About the interactive
circle
You can use the interactive
circle to create a diameter, radius, chord, tangent, and a sector.
Here is the definition of each term:
- The diameter
is the distance across a circle through the center. You can
see what the diameter looks like by drawing a line through a
circle, making sure it goes through the point in the middle,
called the center.
- The radius
is the distance from the center to a point on the circle. The
radius is exactly half the length of the diameter.
- A tangent
is a straight line that just touches a circle. In fact, it only
touches the circle at one point. The tangent line is perpendicular
to the radius drawn to this point.
- A chord
is a line segment joining two points on a circle.
- A circular
sector is the area formed by two radii. It will
look like a wedge, or piece of a pie when created.
You can download the interactive circle and
use it on an SMARTBoard or other interactive whiteboard.
Click here
for a larger, printable version of the interactive circle.
Everything
Geometry
The
Basics | Classifying
Quadrilaterals | Classifying
Triangles
Area
& Perimeter | Angles
| Circles
|
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