Knowing that rigid transformations preserve size and shape or distance and angle, use this fact to connect the idea of congruency and develop the definition of congruent.
- Using manipulatives, demonstrate the following transformations:
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- A rigid transformation is one in which the pre-image and the image both have the exact same size and shape.
- If one shape can become another using turns, flips and/or slides, then the shapes are congruent. Congruent is two objects with the same shape and same size.
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