Investigating Geometry with GeoGebra

Henrico County Public Schools

Key Rotation

READ the instruction below and INTERACT with the GeoGebra applet on the right.

  1. Move the points A and B. What happens to the KEY?

  2. Next, click on the green point and move it. Describes what happens.

  3. What happens to the size or shape of the rotated KEY.

  4. What is the relationship between the KEYS and the green line?

  5. When the KEY is moved what happens to its orientation?
    Is this always true?
Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and activated. (click here to install Java now)