category
Geometry
Geometry Formulas Cheat Sheet
Complete geometry formulas cheat sheet with area, volume, surface area, perimeter for all shapes. Pythagorean theorem and more. Free PDF download.
2D Shapes - Area
| Name | Formula | Notes |
|---|---|---|
| Rectangle | length × width | |
| Square | side squared | |
| Triangle | base × height ÷ 2 | |
| Circle | ||
| Trapezoid | Average of bases × height | |
| Parallelogram | ||
| Ellipse | a, b are semi-axes |
2D Shapes - Perimeter
| Name | Formula | Notes |
|---|---|---|
| Rectangle | ||
| Square | ||
| Triangle | Sum of sides | |
| Circle (Circumference) |
3D Shapes - Volume
| Name | Formula | Notes |
|---|---|---|
| Cube | ||
| Rectangular Prism | ||
| Sphere | ||
| Cylinder | ||
| Cone | ||
| Pyramid | B = base area |
3D Shapes - Surface Area
| Name | Formula | Notes |
|---|---|---|
| Cube | ||
| Rectangular Prism | ||
| Sphere | ||
| Cylinder | ||
| Cone | l = slant height |
Right Triangles
| Name | Formula | Notes |
|---|---|---|
| Pythagorean Theorem | c = hypotenuse | |
| Distance Formula | ||
| Midpoint |
Circles
| Name | Formula | Notes |
|---|---|---|
| Arc Length | θ in radians | |
| Sector Area | θ in radians | |
| Equation of Circle | Center (h,k) |
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