Translate a Geometric Object in Cabri Jr. - dummies

Translate a Geometric Object in Cabri Jr.

By C. C. Edwards

When you translate a geometric object, you move it in a given direction for a given distance. To get Cabri Jr. on the TI-84 Plus calculator to do this for you, you use a segment to tell Cabri Jr. the direction in which to move the object. The length of the segment tells Cabri Jr. how far to move the object.

To translate an already constructed geometric object, follow these steps:

  1. Construct the segment giving the direction and length of the translation.

    The order in which the endpoints of the segment are constructed determines the direction of the translation. In the first picture, the pencil is located at the last point made in the construction of the segment. So the direction of the translation will be the direction from the first (left) point of the segment to the last point where the pencil is located.


  2. Press [TRACE] to access the F4 Transformation menu. Use


    to move the cursor to the Translation option and press [ENTER] to select that option.

    A symbol of the tool appears in the upper-left corner of the screen.

  3. Use the arrow keys to place the cursor on the object to be translated and press [ENTER] to select that object.

    Cabri Jr. can translate only one object at a time. The object to be translated blinks when the cursor is placed on it. When selecting a triangle or quadrilateral, all sides of the object must be blinking to select the whole object instead of just one side of the object. To do this, place the cursor inside the object and move it slightly until all sides are blinking.

  4. Use the arrow keys to move the cursor to the segment and press [ENTER].

    The translation of the original object appears along with the original object.

  5. Repeat Steps 3 and 4 to translate more objects. When you are finished translating objects, press [CLEAR] or select another menu item.

After translating objects, if you move the segment, the translated objects will move to the location defined by the new segment. If you delete one of the endpoints of the segment, the translated object is also deleted.