Today we start learning more specifics about Dilations, the fourth of four Transformations (Translations, Rotations, and Reflections). We know dilations are not RIGID, unlike the other three, because the pre-image of a Dilation DOES change its SIZE after the Transformation into an image. That is, it gets larger or smaller. Translations, rotations, and reflections stay the SAME size. Notice in the Math Is Fun link below the differences and similarities between Transformations. Notice also that they call Dilations by a different name...RESIZING. When shapes keep their size, area, angles and line lengths after a flip, turn, or slide, we call them CONGRUENT and when they change their size we call them SIMILAR. Translations, Rotations, and Reflections create CONGRUENT SHAPES, while Dilations create SIMILAR SHAPES.
Click on the links in the MathIsFun INDEX at the bottom and go through each term carefully reading and completing ALL the activities and questions. The index includes:
1. Rotation
2. Reflection
3. Translation
4. Resizing
5. Congruent
6. Similar
7. Symmetry Index
8. Geometry Index
The Mathopolis questions are very important. Please make sure you answer every question for each of the terms in the INDEX.
Thank you. Email me at rkozak@voyageracademy.net should you have ANY questions.
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