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percent

a ratio that compares a number to 100

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gratuity

a tip due to how good a waiter was

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commission

earning based on the amount of total sales

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sales tax

an additional percent on the total price

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unit rate

how much for one unit

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dilation

a transformation which reduces or increases the size of the original

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scale factor

The number of times larger or smaller the image is from the original. 1) If a scale is greater than one the image will be larger. 2) If the scale factor is between 0 and 1 the image will get smaller.

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right triangle

90 degree angle

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acute angle

an angle less than 90 degrees but more than 0 degrees

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obtuse angle

an angle greater than 90 degrees but less than 180 degrees

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straight angle

an angle that is 180 degrees

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linear pair

two angles that for a straight angle are called a linear pair

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supplementary angles

two angles that add up to 180 degrees

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complementary angles

two angles that add up to 90 degrees

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vertical angles

opposite angles that are always congruent

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parallel lines

lines that go on forever and that will never intersect

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transversal

a line that intersects two or more lines

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corresponding angles

two angles that are in the same place or location on parallel lines cut by a transversal. They are congruent.

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alternate

on the opposite sides of a transversal

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interior

in between to two parallel lines

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exterior

outside the parallel lines

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alternate exterior angles

are congruent

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alternate interior angles

are congruent

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term

A number or variable or a number with a variable or variables attached by multiplication. For example 3xyz or 5 or n.

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monomial

an expression with exactly one term For example 3x or a or b or xy or 7x^3y^7d^3

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binomial

an expression with exactly two terms For example 6j^2 +2j^3.

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trinomial

an expression with three terms. For example 3x+ 3y+3z.

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distributive property

multiply the term in the front of the parenthesis by each term inside the parenthesis

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