Ch 12 Formulas (Pi symbol= π <--copy and paste this)

Rotation 180 degrees ccw

(-x,-y)

Reflection over y-axis

(-x,y)

Reflection over the line y=-x

(-y,-x)

Rotation 90 degrees ccw

(-y,x)

Translation(vectors)(x,y)

(x+a,y+b)

Reflection over x-axis

(x,-y)

Rotation 360 degrees ccw

(x,y)

Rotation 270 degrees ccw

(y,-x)

Reflection over the line y=x

(y,x)

Regular Polygon

1/2aP

Area of Kite

1/2d1*d2

Area of Trapezoid

1/2h(b1+b2)

Pyramid Volume

1/3Bh

Cone Volume

1/3πr^2h

Prism Surface Area

2B+Ph

Circumference

2πr

Cylinder Surface Area

2πr^2+2πrh

Sphere Volume

4/3πr^3

Sphere Surface Area

4πr^2

Pyramid Surface Area

B+1/2Pl

Prism Volume

Bh

Geometric Mean

a/x=x/b

Arc Length

arc/360*πr^2

Scale Factor

new/old

Area of Circle

πr^2

Cone Surface Area

πr^2+πrl

Cylinder Volume

πr^2h