Grid Moves

Geometric Translation .

(A). Translate triangle ABC so that A goes to A .

  1. Select the Vector tool
  2. Click on the original point  A and then the new point A′. You should see a vector.
  3. Select the Translate by Vector tool.
  4. Click on the figure to translate, and then click on the vector.

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(B). Translate triangle ABC so that C goes to C′ .

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  Geometric Rotation.

(A). Rotate triangle ABC 90° clockwise using center O .

  1. select the Rotate around Point tool.
  2. Click on the figure to rotate, and then click on the center point.
  3. A dialog box will open; type the angle by which to rotate and select the direction of rotation.
  4. Click on ok.

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(B). Rotate quadrilateral ABCD 60° counterclockwise using center B. .

Geometric Reflection.

(A). Reflect triangle ABC about line l .

  1. Select the Reflect about Line tool.
  2. Click on the figure to reflect, and then click on the line of reflection.

(B). Reflect triangle ABC about line l .

Rotate quadrilateral ABCD 60° clockwise using center C.

Translate quadrilateral ABCD so that A goes to C.

Try the following Activities. Use the Eraser tool or the Undo tool at the end of each activity to reset and do the next. Enter the coordinates of the new figure below.

  1. Rotate quadrilateral ABCD 90° counterclockwise about B.​
  2. Rotate quadrilateral ABCD 90° clockwise about C.​
  3. Reflect quadrilateral ABCD using line l.
  4. Translate quadrilateral ABCD so that A goes to C.