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Math
A |
Formula
Sheet
... basic
formulas to be used for review.
A formula sheet is
NOT
provided on the
Math A Examination.
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Area
and Perimeter Formulas |
| Perimeter
= distance around the outside (add all sides).
 
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Coordinate
Geometry Formulas
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Distance
Formula:
Midpoint Formula:
Slope Formula:
Parallel lines have equal slope.
Perpendicular lines have negative reciprocal slopes.
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Equations
of Lines |
Slope-Intercept Method:
Point-Slope Method:
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Equations
of Circles
and Parabolas |
Circle, center at origin:
Circle, center at (h,k):
Parabola:
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Angle
Information |
| Complementary angles - two
angles whose sum is 90.
Supplementary angles
- two angles whose
sum is 180.
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Parallel
Lines |
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Corresponding angles are equal. <1=<5, <2=<6, <3=<7, <4=<8
Alternate Interior angles
are equal. <3=<6,
<4=<5
Alternate Exterior angles are equal. <1=<8,
<2=<7
Same side interior angles are supplementary.
m<3+m<5=180, m<4+m<6=180 |
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General
Triangle Info |
| Sum of angles of triangle = 180.
Measure of exterior angle
of triangle = the sum of the
two non-adjacent interior angles.
The sum of any two sides of a triangle is greater than
the third side.
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Polygons |
Sum of Interior Angles:
Sum of Exterior Angles:
Each Interior Angle (regular poly):
Each Exterior Angle (regular poly):
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Probability |
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Probabilities are never
greater than 1 or less than 0.
Complement:
P(A and B)
= P(A)•P(B)
For AND, multiply individual probabilities. Check
for replacement.
P(A or B)
= P(A)+P(B)-P(A
and B)
For OR, add the individual probabilities and subtract the
overlap.
Factorial:
n! = n(n-1)(n-2)(n-3)...1 |
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Similar
Triangles |
| Two triangles are similar
if the corresponding angles are congruent and the
corresponding sides are in proportion.
Additional method of solution: A
line parallel to one side of a triangle divides the
non-parallel sides proportionally.
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