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Exploring Polygon Symmetry: Reflection vs. Rotational Symmetry

Learn to identify reflection and rotational symmetry in polygons, finding the line of symmetry or degree of rotation. Engage in activities to understand the concepts. Compare and contrast reflection and rotational symmetry for deeper understanding. Exciting mini-lesson and interactive classwork await!

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Exploring Polygon Symmetry: Reflection vs. Rotational Symmetry

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  1. 7th Grade 5/27/2016 • Aim: How can a polygon show symmetry? (7.G.B.5) Do Now – Check homework. Compare and contrast answers. Any questions? Then read page 72. Make observations about both types of symmetry BIG IDEAS You will be able to: • identify if a polygon has reflection and rotational symmetry • Find the line of symmetry or degree of rotation

  2. Mini Lesson • There are two types of symmetry: • Reflection Symmetry – has a line of reflection that splits the polygon into a mirror image • Rotational Symmetry – has a degree of rotation that allows the polygon to be turned to look exactly as it does originally Example

  3. Activity • Classwork  Page 73/#A1-3 • Extension Play The quadrilateral Game – Page 74-75 (with geoboards) • Critical Thinking  Page 75/#B1-3

  4. Exit Ticket How is reflection symmetry different than rotational symmetry?

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