Formulae
(That's Latin for "More than onE of those formula thingys")
Geometric Formulae
Key Legend
l = length
w = width b = base h = height s = slant height (the height of the slanted side) r = radius d = diameter |
P = Perimeter
C = Circumference A = Area SA = Surface Area V = Volume |
2 Dimensional Shapes (Flat Flat Flat)
Rectangles
You can also write the formula as follows:
P = 2(l+w)
Squares
Recall that a square has four perfectly equal sides.
Parallelogram
The key to this shape is that the sides opposite each other MUST be parallel to each other.
Trapezoid
Kind of like a triangle with the top tip chopped off....
Triangles
Types of Triangles
All triangles are not created equal.... not even equilateral triangles!!!
Triangles, continued....
Some nifty truths about three sided two dimensional figures (aka Triangles)
Circles
Round and round.
Three Dimensional Shapes 3D!
Rectangular PrismCylinderSurface Area of JUST the "tube" part of the cylinder, NOT including EITHER the base OR the top would be as follows:
Square-Based Pyramid |
CubeThe Formula for Surface Area of a Cube is as follows:
SphereThe forumla for the Surface Area of a sphere is as follows:
Cone |