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Three Views of Square Symmetry
James E. Hamblin
The dihedral group D8 (sometimes called D4), the group of symmetries of the square, is one of the simplest finite groups. It is one of the first examples students see in an introductory Abstract Algebra course, but it is also an example that tends to confuse many students. In these three mathlets, we will explore different aspects of this symmetry group to get a better understanding of its structure.
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