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Area of Parallelogram
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Base x height
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Area of Rectangle
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Base x height
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Area of Triangle
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1/2 x base x height
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Area of Kite
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1/2 x diagonal 1 x diagonal 2
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Area of Rhombus
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1/2 x diagonal 1 x diagonal 2
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Area of Trapezoid
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1/2 x height x (base1 + base 2)
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Area of Regualr Polygon
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1/2 x perimeter x apothem
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Pythagorean Theorem
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A2 + b2 = c2
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Area of Circle
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Pi x radius2
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Circumference
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2 x pi x radius
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Equation of Circle
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(x - h)2 + (y - k)2 = r2
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Sum of Interior Angles of Polygon
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(number of sides - 2)180
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Sum of Exterior Angles of Polygon
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360
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One Exterior Angle of a Regular Polygon
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360/number of sides
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Sin A
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Opposite/hypotenuse
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