All Geometry Formulas Flashcards by Ilkim Ozbaris

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Q

Area of a triangle

A

base x perpendicular height / 2

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Q

Pythagoras’ Theorem

A

a^2 + b^2 = c^2

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Q

Area of a parallelogram

A

base x perpendicular height

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Q

Area of a trapezium

A

(a + b) / 2 x height

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Q

Area of a circle

A

π x r^2

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Q

Circumeference

A

2 x π x r

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Q

Area of a sector

A

θ / 360 x π x r^2

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Q

Arc length of a sector

A

θ / 360 x 2 x π x r

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Q

Volume of a prism

A

cross section area x length OR height

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Q

Volume of a sphere (given)

A

4/3 x π x r^3

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Q

Volume of a cone

A

1/3 x x π x r^3 x height

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Q

Volume of a pyramid

A

1/3 x area of base x height

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Q

Frustum volume

A

volume of large cone OR pyramid - volume of small cone OR pyramid

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Q

Surface Area of CONE

A

(π x r x l) + ( π x r^2)

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Q

Sum of all interior angles in a polygon

A

(n -2) x 180°

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