Math Formulas Flashcards by Mackenzie Dacus

Q

Perimeter of rectangle

A

2(length+width)

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Q

Area of Triangle

A

Area=1/2(base)(height)

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Q

Area of rectangle

A

Length x width

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Q

Area of square

A

(Side)^2

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Q

Area of parallelogram

A

(Base)(height)

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Q

Area of trapezoid

A

(Average of parallel sides) x (height)

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Q

Circumference of a circle

A

2PI(r) or PI(D)

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Q

Area of circle

A

PI(r)^2

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Q

Isosceles

A

Two equal sides, 2 equal angles

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Q

Equilateral

A

3 equal sides, 3 60 degree angles

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Q

Right triangle

A

Ratios:

3: 4:5
5: 12:13

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Q

Ratio of 45, 45, 90 isosceles

A

1:1:square root 2

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Q

Ratio of 30, 60, 90

A

1:square root 3:2

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