Review of Transformations - Isometry Status Topic Index | Geometry Index | Regents Exam Prep Center

Isometry - length is preserved - the figures are congruent.
Direct Isometry - orientation is preserved - the order of the lettering in the figure
and the image are the same, either both clockwise or both counterclockwise.
Opposite Isometry - orientation is not preserved - the order of the lettering is reversed,
either clockwise becomes counterclockwise or counterclockwise becomes clockwise.

 Line Reflection Point Reflection Translations Rotations Dilations Opposite isometry Direct isometry Direct isometry Direct isometry NOT isometry. Figures are similar. Properties preserved: 1. distance 2. angle measure 3. parallelism 4. colinearity 5. midpoint Properties preserved: 1. distance 2. angle measure 3. parallelism 4. colinearity 5. midpoint Properties preserved: 1. distance 2. angle measure 3. parallelism 4. colinearity 5. midpoint Properties preserved: 1. distance 2. angle measure 3. parallelism 4. colinearity 5. midpoint Properties preserved: 1. angle measure 2. parallelism 3. colinearity 4. midpointLengths not same. Reverse Orientation (letter order changed) Same Orientation (letter order the same) Same Orientation (letter order the same) Same Orientation (letter order the same) Same Orientation (letter order the same) Notation: Notation: Notation: Notation: Notation:

 Glide Reflection Opposite isometry Properties preserved: 1. distance 2. angle measure 3. parallelism 4. colinearity 5. midpoint Reverse Orientation (letter order changed)

 Topic Index | Geometry Index | Regents Exam Prep Center Created by Donna Roberts