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### 127 Cards in this Set

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 absolute value the distance between a number and zero on the number line addend one of the numbers being added in an addition problem adjacent angles two angles that share a common side algebraic expression an expression that contains one or more variables alternate interior angles angles between parallel lines that are on opposite sides of the transversal angle formed when two lines intersect angle measure the number of degrees in an angle area the number of square units covered by a geometric figure arithmetic mean the average; the sum of a set of numbers divided by the number of numbers in the set average the mean; the sum of a set of numbers divided by the number of numbers in the set bar graph a graph that uses bars of different lengths to compare data circle graph a pie chart; a graph shapd like a circle that shows fractions, percents, or decimals as parts of the whole cone a three-dimensional object with a cricular base and a pointed top congruent having the same size and shape congruent angles two angles that have equal degree measure consecutive numbers integers or a subset of integers that are next to each other. consecutive integers integers that increase or decrease incrementally by 1 coordinates the x and y values of a point in the coordinate plane, written (x,y) counting figuring the number of ways you can select members of a group counting principle fundamental principle of counting; if one event can happen in n ways, and for each of these, a second event can happen in m ways, the total ways in which the two events can happen is n times m counting number natural number; any positive integer cube a six-sided square prism. all sides are congruent cylinder a three-dimensional object with a circular top and an identical base decimal a rational number equivalent to a fraction whose denominator is a power of 10 decimal places places to the right of the decimal degree 1/360th of a circle; used to measure angles degree measure the size of an angle in degrees denominator the bottom number in a fraction diameter a line that divides a circle in half. it passes directly through the center of the circle and tht starts and ends on the edges of a circle difference the result of a subtraction problem digit a member of the set of all consecutive integers from 0 to 9 dividend the number being divided in a division problem divisibility division with no remainder divisor the second number in a division problem equation a mathematical statement that uses an equal sign to show that two mathematical expressions are equal equilateral triangle a triangle with three equal sides and three equal angles that all measure 60 degrees even number a whole number that is divisible by 2 exponent a number written to the upper right of a number that tels how many times to multiply tht number by itself factor a number that divides evenly into another number fraction a number written as a part over a whole; a numerator over a denominator fundamental principle of counting if one event can happen in n ways, and for each of these, a second event can happen in m ways, the total ways in which the two events can happen is n times m graph a visual representation heptagon a seven-sided polygon hexagon a six-sided polygon hundreds place the position of the third digit to the left of the decimal point hundredths place the position of the second digit to the right of the decimal point hypotenuse the side of a right triangle that is opposite the right angle; the longest side in a right triangle improper fraction a fraction with a numerator that is larger that the denominator inequality a mathematical sentence that shows the relationship between expressions that are not equal, using <,>,<=,>= integer any positive or negative whole number or 0 irrational number any number that is not a rational number. a number is this if it can be written as a decimal that does not repeat and does not end isosceles triangle a triangle that has two equal sides and two equal angles line a straight line that goes on forever in both directions mean the average; the sum of a set of numbers divided by the number of numbers in the set median the middle value of a set of numbers when they are arranged from lowest to highest. if the set contains an even number of numbers, it is the average of the two numbers closest to the middle mixed number a number that is made up of a whole number and a fraction mode the value or values that appear most frequently in a list of numbers multiple of a number the product of that number and another number natural number any positive integer; a counting number negative number any number that is less than zero number line a line labeled with positive and negative numbers in increasing order from left to right that extends infinitely in both directions numerator the top number in a fraction octagon an eight-sided polygon odd number a whole number that is not divisible by 2 ones places the position of the first digit to the left of the decimal point; units place order of operations the order in which to simplify a problem with multiple operations; PEMDAS ordered pair coordinates origin the point (0,0) on the coordinate plane where the x-axis and the y-axis meet parallel lines lines that are always the same distance apart parallelogram a four-sided polygon with two sets of parallel lines PEMDAS Please Excuse My Dear Aunt Saly; a way to remember the order of operations in problems: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction pentagon a five-sided polygon percent the ratio of a number to 100 perimeter the distance around a geometric figure; the sum of lengths of the sides perpendicular lines lines that intersect to form four right angles pie chart a graph shaped like a circle that shows fractions, percents, or decimals as parts of the whole; a circle graph point a dot that represents an exact location polygon a closed geometric figure with three or more sides positive number any number greater than zero prime number an integer greater than 1 that is divisible only by 1 and itself prism a three-dimension object with congruent, parallel ends and rectangular sides probability the number of ways the event can happen divided by the total number of possible outcomes product the result of a multiplication problem proportion a statement that says two ratios are equal pythagorean theorem the sum of the squares of the lengths of the two legs of a right triangle is equal to the length of the hypotenuse squared; a^2+b^2=c^2 quadrilateral a four-sided polygon quotient the integer result of a long division radius a line that starts at the center of a circle and ends on the edge of the circle; half of the diameter range the difference between the highest and lowest values in a group of numbers ratio a comparison of two numbers or quantities rational number a number that can be written in the form of a fraction whose numerator and denominator are both integers real number any rational or irrational number reciprocal a fraction flipped upside down rectangle a four-sided polygon with four right angles rectangular box a three-dimensional rectangle reduced fraction a fraction in which the numerator and the denominator have no common factors reflection the process of moving a point or figure by reflection it over an axis, as if the axis were a mirror regular polygon a polygon in which all sides are equal and all angles are equal repeating decimal a decimal number that ends in an infinitely repeating series of digits. rhombus a four-sided polygon with four equal sides right angle an angle that has a measure of 90 degrees right triangle a triangle that has a 90 degree angle as one of its angles sample space the set of all possible outcomes in a probability problem scatter plot a graph made by plotting data points sphere a three-dimensional object in which all surface points are the same distance from the center square a four-sided polygon with four equal sides and four right angles square root the nonnegative number which, when multiplied by itself, gives you the original number tangent touching tens place the position of the second digit to the left of the decimal point tenths place the position of the first digit to the right of the decimal point thousands place the position of the fourth digit to the left of the decimal point thousandths place the position of the third digit to the right of the decimal point transformation any combination of translations and reflections translation a process of moving a point or figure a specified distance in a certain direction transversal a line that cuts across parallel lines trapezoid a four-sided polygon with exactly one pair of parallel sides triangle inequality rule the sum of the length of any two sides of a triange is always greater than the third side units place the position of the first digit to the left of the decimal point variable a letter than represents a number vertex the point at which lines intersect vertical angles the angles opposite each other that are formed when two lines intersect volume the amount of space that a three-dimensional figure occupies whole number a natural (or counting) number or 0 x-axis the horizontal axis on the coordinate plane x-coordinate the first number in an ordered pair y-axis the vertical axis on the coordinate plane y-coordinate the second number in an ordered pair