|Tool: Area and perimeter of a rectangle (Coordinate Geometry) - Math Open Reference||
|Go to:||http://www.mathopenref.com/reflect.html (opens a new window)|
A web page and interactive (Flash) applet demonstrating the reflection transformation. Drag the vertices of a triangle and re-position the line of reflection. The reflected image of the triangle is updated as they drag.
Optionally, user can turn on lines showing the distances from the vertices of the original and the image, demonstrating that they are congruent at all times.
Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required.
This resource is a component of the Math Open Reference interactive geometry reference book project at http://www.mathopenref.com.
|Cost:||Does not require payment for use|
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