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Published byEsther Susanna Dean
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Rectangle l - length w - width
Square s – side length s s s
Circle r d r – radius d – diameter C - circumference
Parallelogram b - base h - height
Triangle b - baseh - height b h b h
Equilateral Triangle s – side length s s s
Rhombus d2d2 Facts: All 4 sides are congruent The diagonals bisect each other The diagonals are perpendicular to each other d1d1
Kite d2d2 Facts: The longer diagonal bisects the smaller diagonal The diagonals are perpendicular to each other d1d1
Trapezoid b 1, b 2 - bases b2b2 b1b1 h
Regular Polygon s – side length a - apothem Example: Regular Hexagon s s s s s s a P – Perimeter
Circle – Formulas Radius of the circle is generally denoted by letter R. Diameter of the circle D = 2 × R Circumference of the circle C = 2 × × R (
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