Inscribing & Circumscribing Polygons

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Construct polygons using a dynamic geometry software that are inscribed in a circle or circumscribe about a circle.

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Perplexing Pentominoes

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Explore with pentominoes.

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Pentagram Triangles

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How many triangles are formed?

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Same Size Perimeter

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If the perimeter remains the same, can the area change?

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Avoiding a Pentagon

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Can you draw points on a piece of paper so that it is not possible to connect them to form a convex pentagon?

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Dividing a Trapezoid

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Divide a given shape into 4 congruent shapes.

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N-Sided Circle?

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Compare the perimeters of polygons to the circumference of the circle.

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Round Robin Tournament

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Use the sides and diagonals in a regular polygon to create a round robin tournament.

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Diagonals in a Polygon

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Consider the number of diagonals in a triangle, quadrilateral, pentagon, hexagon, heptagon, and octagon.

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Symmetry Lines II

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Find polygons that have line symmetry. Many polygons do not have line symmetry.

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