These reflected rectangles are example of congruent shapes. When transforming a shape, either through translation, reflection or rotation, a congruent shape is produced. Enlargements create shapes ...

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Well, what is the best way to cut a sandwich in half? Surely triangles don't really have "more sandwich," right? That's geometry and the law of conservation of matter. But something about the ...

Big Idea – We can describe, measure, and compare spatial relationships. to build on students' knowledge of triangle and to develop students' reasoning with properties of triangle to develop students' ...