Georgia
Coordinate Algebra
Formula Sheet
Milestones
Below are the formulas you may find useful as you work the problems. However, some
of the formulas may not be used. You may refer to this page as you take the test.
Area
Mean Absolute Deviation
n
Rectangle and Parallelogram A = bh
Triangle
i =1
|x −x|
i
n
Circle A = πr2
Trapezoid A = 1 ( h ) ( b1 + b2
2
)
Circumference
C = πd
å
1
A = bh
2
the average of the absolute deviations
from the mean for a set of data
Distance Formula
d = ( x 2 − x1 )2 + ( y2 − y1 )2
π ≈ 3.14
Volume
Rectangular Prism/Cylinder V = Bh
Slope Formula
1
m=
Pyramid/Cone V = Bh
3
4 3
Sphere V = πr
3
Surface Area
Rectangular Prism SA = 2lw + 2wh + 2lh
Cylinder SA = 2πr2 + 2πrh
Pythagorean Theorem
a2 + b2 = c2
y2 − y1
x 2 − x1
Midpoint Formula
M=
x1 + x 2 y1 + y2
,
( 2
2 )
Interquartile Range
and third quartile of a set of data
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