MA19.8.22

Mathematics (2019) Grade(s): 8

MA19.8.22
Verify experimentally the properties of rigid motions (rotations, reflections, and translations): lines are taken to lines, and line segments are taken to line segments of the same length; angles are taken to angles of the same measure; and parallel lines are taken to parallel lines.

Unpacked Content

Knowledge

Students know:

How to measure line segments and angles.
That similar figures have congruent angles.
The definition/concept of what a figure does when it undergoes a rotation, reflection, and translation.
How to perform a translation, reflection, and rotation.

Skills

Students are able to:

verify by measuring and comparing lengths of a figure and its image that after a figure has been translated, reflected, or rotated its corresponding lines and line segments remain the same length.

Understanding

Students understand that:

congruent figures have the same shape and size.
Two figures in the plane are said to be congruent if there is a sequence of rigid motions that takes one figure onto the other.

Vocabulary

Congruent
Rotation
Reflection
Translation

Aligned Learning Resources

Transformations StudyJam

Comparing Quadratic and Exponential Functions

Concentric Circles

Connections to Personal Experiences - Bees? Yikes!

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