Formulas To Memorize Flashcards by Raely Matienzo | Brainscape

Q

Area of a sector

A

A = degrees/360 • (pi r square)

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Q

A = degrees/360 • (piR square)

A

Area of a sector

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Q

Arc length

A

Degrees/360 • (2 pi r)

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Q

Measure of interior angle

A

Angle = arc+arc/2

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Q

Measure of exterior angle

A

Large arc - small arc /2

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Q

Distance formula

A

Square root of x2-X1 square plus y2-y1 square

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Q

Midpoint formula

A

X2+X11 over 2, y2+y1 over two

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Q

Ratio formula

A

X= mx2+nx1 over m+n y= my2+my1 over m+n

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Q

Equation of a circle

A

((X-a) square plus (y-b) square equals radius 2

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