Full color laminated 3 1/2" x 5" visual vocabulary for 7th Grade Formulas includes the following:
Formula
A = (b₁+b₂)h 2 or 12(b1+b2)h  – Area of a Trapezoid 
A = bh2 or (1/2)bh – Area of a Triangle
A = bh – Area of a Rectangle
A = P(1+r)t  – Compound Interest
A = s² or s x s – Area of a Square
A = πrs – Area of a Circle
Area - defined
B = l×w or b×h - Base (B) of 3-D figure 
b-value – y-intercept of graph
Base – of a 2-D shape
Base – of a 3-D shape
C = πd or π2r – Circle Circumference 
Circumference 
d = rt – Distance (general formula)
Diameter
h = height of 3-D shape 
Height - of 2-D shape 
I = Prt – Simple Interest
k = yx  - Constant of Proportionality 
Radius 
Rate
V = 13Bh or Bh3  – Pyramid Volume 
V = Bh – Volume of prisms
Volume
y = kx – Proportional 
y = mx+b – Y-intercept formula
π (Pi)