Geometry Flashcards by Jessica Eting

Q

circles

Circumference =

A

C= dπ

or

c=2rπ

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Q

circles

Diameter =

A

D=2r

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Q

circles

Area =

A

A=πr^2

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Q

circles

Sectors are

A

like slices of the circle. Think of them relative to the piece of the circle they represent.

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Q

triangles

What are the three common right triangle triplets?

A

3: 4:5
5: 12:13
8: 15:17

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