Lines
A=LxW
Area of a Rectangle
A=1/2bh
Area of a Triangle
Lines that meet or cross at a common point
Intersecting
A=BxH
Area of a Parallelogram
A shape with 8 sides is called
Octagon
Looks like a train track
Parallel
A=1/2h(b1+b2)
Area of a Trapezoid
A shape with nine sides
Nonagon
S+S+S+S=P
Perimeter Equation
A shape with 7 sides is called
Heptagon