Geometry Area Formulas cherrington
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14 Terms
1
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rectangle
Area = base x height
2
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parallelogram
Area = base x height
3
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triangle (familiar formula)
Area = (1/2) x base x height
4
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trapezoid
Area = (1/2) x height x (base1 + base2)
5
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kite
Area = (1/2) x diagonal1 x diagonal2
6
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rhombus
Area = (1/2) x diagonal1 x diagonal2
7
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Regular Polygon (given apothem)
Area = (1/2) x Apothem x Perimeter
8
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Regular Polygon (given radius)
Area = (n/2) x radius^2 x sin(360/n)
9
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triangle (new formula)
Area = (1/2) x side1 x side2 x sin(angle)
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circle
Area = pi x r^2
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circumference
C = pi x diameter
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sector area or central angle
angle/360 = sector area/circle area
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arc length or central angle
angle/360 = arc length/circumference
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segment
Area = sector area - triangle area
Note 
Flashcards (227)