4.9B

=use translations, reflections, and rotations to verify that two shapes are congruent. = = = =Possible combinations of how it might be tested: =
 * __4.9B __**

Use rotations to verify that two shapes are congruent.
= = ====Common issues with this SE have been where students have confused pictorial representations of rotations as reflections or visa versa. An important instructional approach to help with student success is to have students justify their responses after identifying a transformation. For example: if a student looks at an example of a transformationa and identifies it as a reflection, the student should also explain his/her reasoning with specific details. Have the students locate certain points or parts of images in the original and in the transformed images and describe whether the point has rotated 90 degrees, is still the closest point to the line of symmetry, or has stayed on the same side of the figure but just moved as the object moved, etc.====

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