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A simple sketch helping students to understand 2D reflection.

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Geogebra

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opposite isometry. When you read off the vertices of triangle ABC in cyclic order, they are read in a counterclockwise direction. When you read off the vertices of triangle A'B'C' in cyclic order, they are read in a clockwise direction.

# data[].attributes.attachment_link.description
opposite isometry. When you read off the vertices of triangle ABC in cyclic order, they are read in a counterclockwise direction. When you read off the vertices of triangle A'B'C' in cyclic order, they are read in a clockwise direction.

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Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

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PiPad Mathematics: Math Learning Center iPad app Geoboard and Lines of Symmetry