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Across
2.The expression formed by adding the terms of an arithmetic sequence
6.a relation for which each input has exactly one output
9.the set of input values of a relation
11.The output variable in an equation in two
18.The compostition of a function g with a function f is "h(x)=g(f(x))".
19.The sum of of two monomials
20.A trigonometric ratio, abbreviated as cos.
Down
1.A sample that overrepresents or underrepresents part of a population
3.An angle whose vertex is the center of the circle
4.A chord that contains the center of a sphere. The distance across a sphere through its center
5.A chord that passes through of a sphere. the distance across a sphere through its center
7.Two complex Numbers of the form a+bi and a-bi
8.Two circles that have the same radius
10.a complex number a+bi
12.An unbroken part of a circle
13.A mapping, or pairing, of input values with output values
14.A line that a graph approaches more and more closely
15.The distance around the circle
16.the line that lies as close as possible to all the data points in a scatter plot
17.A portion of the circumference of a circle

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