# GRE Geometry

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1. Area
height × width
2. Volume
height × width × depth
3. Perimeter of a square
s + s + s + s = 4s
4. Area of a square
s × s = s²
5. Perimeter of a rectangle
w + l + w + l = 2w + 2l
6. Area of a rectangle
l × w
7. Volume of a rectangle
= Length × Width × Height = l × w × h
8. Perimeter of a circle
2 × pi × r
9. Area of a circle
A = pi r²
10. Volume of a cylinder
[Area of circle] × Height = pi × r² × h
11. The volume of a sphere
4/3 pi × r ³
12. Perimeter of a triangle
a + b + c
13. Area of a triangle
½ Base × Height
14. Midpoint formula
x1+x2/2 , y1+y2/2
15. slope
m - y2-y1 / x2-x1
16. Distance between 2 lines formula
square root of (x2-x1)2 + (y2-y1)2
17. The Point slope formula
The equation of a line passing through two
points in the coordinate plane can be expressed by the point-slope formula:
(y – y1) = m(x – x1)

### Card Set Information

 Author: amsolis729 ID: 131637 Filename: GRE Geometry Updated: 2012-01-30 11:55:01 Tags: GRE math geometry Folders: Description: GRE Geometry Show Answers:

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