Naming the Moves

Investigating Moves on the Plane.

Follow the transformations from Pre-image D to the final D”’ and describe each move.

  1. The tranformation from D onto D’ is a rotation. In what direction is the rotation? Could you figure this out if there was no grid?
  2. What is the angle of rotation?
  3. What is the point of rotation and its coordinates?
  4. What is the transformation that moves D’ moves to D”? Justify your answer.
  5. What is the transformation that D” moves to D”’? Justify your answer.

Naming the Transformations.

Quadrilateral A can be rotated into the position of Quadrilateral B. Estimate the angle of rotation.

Each of the six cards shows a shape.

(1). Which pair of cards shows a shape and its image after a rotation?

(2). Which pair of cards shows a shape and its image after a reflection?

The rectangle seen in Frame 1 is rotated to a new position, seen in Frame 2.