act formulas

triangle area

A = ½ bh

rectangle area

A = lw

rectangle perimeter

2l + 2w

parallelogram area

A = bh

circle circumfrence

C = 2πr

circle area

A = πr²

trapezoid area

A = ½ (b1+b2)h

kite area

A = ½ lw

right cylinder volume

V = πr²h

rectangular prisim volume

V = lwh

cube volume

V = side²

to find any angles when you see sin² or cos²

sin²θ+cos²θ=1 (whenever you see this formula it just automatically equals 1)

find the sum of interior angles of any given shape

180(# of sides - 2)

cube surface area

6(side)²

logarithm

logₐb=c is the same as aᶜ=b

point slope form

y-y₁=m(x-x₁)

standard form

Ax+By=C

midpoint formula

distance formula

mean

sum/# of terms

discriminant formula

b²-4ac