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26 Cards in this Set

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  • Back
  • 3rd side (hint)
additive inverse
Two numbers with a sum of zero.
Example:
23 and -23 are additive inverses because -23 + 23 = 0.
alternate exterior angles
Nonadjacent exterior angles found on opposite of the transversal.
Example:

/ 1 & / 7, and
/ 2 & / 8 in diagram.
alternate interior angles
Nonadjacent interior angles found on opposite sides of the tranversal.
Example:
/ 4 & / 6, and
/ 3 & / 5 in diagram.
arithmetic sequence
A sequence of numbers in which each term after the first is the result of adding a fixed number (called the common difference) to the previous term.
Example:
The sequence
4, 10, 16, 22, 28, 34,...
is an arithmentic sequence. The common difference is 6.
complementary angles
Two angles whose measures add to equal 90 .
Example:
/ BCA and / CAB are complementary angles in the diagram.
corresponding angles
Pairs of nonadjacent angles that lie on the same side of a transversal of two lines and in corresponding positions.
Example:
/ 1 & / 3 are coresponding angles and so are
/ 2 & / 4 in the diagram.
exponent
A number that shows how many times a base number is used as a factor.
Example:
In 3 ,
the 4 is the exponent, therefore
3 = 3 x 3 x 3 x 3
function
A relationship in which each member of the domain is paired with exactly one member of the range. A number of a domain is an input and the related number of the range is an output.
Example:
hypotenuse
The side opposite the right angle in a right triangle.
Example:
inequality
Mathematical sentence that contains or uses one of the symbols <, >, , , or =.
Example:
k < -3
irrational number
A number that can be represented by a nonrepeating, nonterminating decimal.
Example:
legs
The two shorter sides of a right triangle. Either of the two sides that form the right angle of a right triangle.
Diagram:
like terms
Expressions that contain the same variables.
Example:
3b + 12b = (3 + 12)b = 15b
linear equation
Any equation whose graph is a straight line.
Example:
y = 1/2x + 3 is linear because its graph is a line.
multiplicative inverse
The reciprocal of a number.
Example:
9/4 is the multiplicative inverse of 4/9.
Pythagorean Theorem
In any right triangle, the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs.
a + b = c
a + b = c
Example: The right triangle shown has leg lengths 3 and 4 and hypotenuse length 5:
3 + 4 = 5
9 + 16 = 25
radical sign
The symbol used to indicate a nonnegative square root.
rational number
Any number you can write as a quotient of two integers a/b, where b is not zero.
Examples:
3/5, -8, 8.7, 0.333..., 0, 17/4, -5 3/11.
relation
A set of ordered pairs.
Example:
{(0,2), (-3,2), (0,1)}
Scientific notation
A way of reexpressing a number so that it is written as the product of a number greater than or equal to 1 and less than 10, and a power of 10.
Example:
37,000 written as 3.7 x 10
sequence
A set of numbers that follow a pattern.
Examples:
2, 2.3, 2.34, 2.345,...
3, 6, 9, 12, 15,...
significant digits
Digits that represent an actual measurement.
slope
A ratio that represents the tilt of a line (the change in y to the corresponding change in x).
Example & Diagram:
The slope of the given line is 2/4 or 1/2.
square root
A number that when multiplied by itself equals the given number.
One of the two equal factors of a number.
Example:
25 = 5 because 5 = 25
supplementary angles
Two angles whose sum of their measures is 180 .
Example & Diagram:

A & D
system of linear equations
Two or more linear equations.
Example:
y = 3x + 1 and y = -2x - 3