Distance formula
d= √(x_2 − x_1)^2+(y_2− y_1)^2
midpoint formula
M(x, y)=((x_1+ x_2)/2, (y_1+ y_2)/2)
gradient
m = rise/run
The standard form of a straight line
y = mx + c
Pythagoras’ theorem
c^2= a^2+b^2
volume cube
V=s3
Right Rectangular Prism
V=LWH
Prism or Cylinder
V=Ah
Pyramid or Cone
V=13Ah
Sphere
V=43πr^3
Parallelogram
A=πr^2
Trapezoid
A=(b_1 + b_2)/2h
Parallelogram
A=bh
Triangle
A=1/2bh
Rectangle
A=LW
Square
A=s2
Circle
P=C=2πr
Triangle
p=a+b+c
Rectangle
P=2L+2W
Square
P=4s