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Geometric Shapes: The Basics
by Colleen Wagner
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Geometric Shapes: The Basics

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Regular Octagon: Polygon with eight sides of equal length.

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This stop sign is an example of a regular octagon.

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Regular Decagon: A polygon with ten sides of equal length.

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This is an example of a regular decagon.

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Quadrilaterals: A geometric shape with four sides and angles.

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Parallelogram: Quadrilateral with opposite sides parallel.

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Trapezoid: Quadrilateral that has at least one pair of parallel sides.

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Kite: Quadrilateral with two distinct pairs of congruent adjacent lengths.

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Square: Rhombus with a right angle.

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Rhombus: Quadrilateral where all sides have equal length.

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Triangles: Polygon with three sides and three interior angles.

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Equilaterial Triangle: Polygon in which all three sides and three angles are congruent.

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Isosceles Triangle: Polygon where only two sides and two angles are congruent.

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Right Triangle: Polygon that has exactly one right angle.

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Regular Hexagon: Polygon that has all six sides of equal length.

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This is an example of a regular hexagon.

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Pentagon: A polygon with five sides.

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This soccer ball has examples of pentagons.

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