Geometry-Area Formulas
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12 Terms
1
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Area of a Circle
A=Πr²
2
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Circumference
C=2Πr
3
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Area of a Rectangle
A=LW
4
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Area of a Right Triangle
A=(1/2)BH
5
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Area of an Oblique Triangle
A=(1/2)BH
6
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Area of a Regular Polygon
A=(NSA)/2
N=Number of sides
S=Side length
A=Apothem
7
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Apothem
A=(S)/(2)(tan(180/N)
8
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Area of a Parallelogram
A=BH
9
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Area of a Rhombus (Altitude-Side)
A=(Altitude)(Side length)
10
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Area of a Rhombus (Angle-Side)
A=(Side Length)²(sin(A))
or
A=(Side Length)²(sin(B))
11
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Area of Rhombus (Diagonal-Diagonal)
A=pq
p=Diagonal 1
q=Diagonal 2
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Area of a Trapezoid
A=((a+b)/2)(H)
a=Bottom
b=Top
H=Height
Note 
Flashcards (91)