List of formulas in elementary geometry
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This is a short list of some common mathematical shapes and figures and the formulas that describe them.
Two-dimensional shapes
Shape | Area | Perimeter/Circumference |
---|---|---|
Square (where is the length of a side) | ||
Rectangle ( is length, is width) | ||
Circle (where is the radius and is the diameter) | or | |
Ellipse (where is the semimajor axis and is the semiminor axis) | ||
Triangle ( is base; is height; are sides) | ||
Parallelogram ( is base, is height, is side) | ||
Trapezoid (where and are the bases) |
Three-dimensional shapes
Shape | Volume | Surface area |
---|---|---|
Cube (where is the length of a side) | ||
Rectangular Prism ( = length, = height, = width) | ||
Sphere (where is the radius) | ||
Right circular cylinder (where is the radius and is the height) |
- Sources:[3]
References
- ^ "Archived copy" (PDF). Archived from the original (PDF) on 2012-08-13. Retrieved 2011-11-29.
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- ^ http://www.math.com/tables/geometry/volumes.htm