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Hint

1

Area of a Circle

A = πr²

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2

SOHCAHTOA

Sin = Op/Hyp

Cos = Adj/Hyp

Tan = Op/Adj

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3

Pythagorean Theorem

a² + b² + c²

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4

One Full Circle

2π radians

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5

30-60-90 Triangle

x : x√3 : 2x

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6

45-45-90 Triangle

x : x : x√2

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7

What does similar mean for triangles?

Two shapes are similar if their corresponding angles are equal to their corresponding and are proportional.

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8

Diameter

2r

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9

Circumference

2πr

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10

Area

πr²

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11

Area of a Sector equation

θ/360 x πr²

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12

Equation for Arc Length

θ/360 × 2πr

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13

Degrees → Radians

π radians/180

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14

Radians → Degrees

180/π radians

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15

Surface Area of a Rectangular Prism

2lw + 2lh + 2hw

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16

Surface Area of a Cube

6s²

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17

Surface Area of a Cylinder

2πr²+ 2πrh

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18

Volume of a Cube

V = s³

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19

Volume of a Cylinder

V = πr²h

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20

Mean

Average of a set of numbers

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21

Median

Middle term of the set (when ordered from least to greatest)

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22

Mode

Most common number in a set

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23

Range

Difference between the least and greatest number in a set

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24

Slope Equation

(y2-y1)

/

(x2-x1)

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25

Slope Intercept Form

y = mx + b

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26

Point Slope Formula

y - y1 = m(x - x1)

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27

Parallel lines have the same ___?

Slope

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28

Perpendicular slopes are ____?

Negative reciprocals

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