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1 Data collections of information often organized in graphs or charts, can be facts, numbers, or measurements 2 Histogram graph to display intervals of one type of data 3 Exponent the number of times the base is being multiplied in a power 4 Base the number in a power being multiplied 5 Power base and exponent (shortened repeated multiplication) 6 Variable expression a number sentence with variables and operation signs with no equal sign 7 Evaluate solve 8 Order of operations the rules used to solve all mathematical problems 9 Verbal Model a word equation that represents a real world situatio 10 Variable a letter used to represent an unknown 11 Frequency Table used to separate data into equal intervals 12 Bar graph way of comparing data with bars, compares more than one thing, bars don’t touch 13 Numerical expression a number sentence with operation signs and numbers, no equal sign ________________________________________________________________________ 14 Scientific Notation scientific notation a way to write very large or very small numbers, has a decimal part between 1 and 10 and is multiplied by a power of 10 15 Integer positive and negative whole numbers and zero 16 Negative integer a whole number that is less than zero 17 Positive integer a whole number that is greater than zero 18 Absolute value a number’s distance away from zero on a number line 19 Mean the sum of values in a set divided by the number of values 20 Terms each part of an expression 5y + z -6 terms are 5y, z, and -6 21 Like terms terms that have the same variable part in an expression ________________________________________________________________________ 22 Coefficient the number part of a term with a number and a variable, if no number is present the coefficient is 1 23 Constant a term with a number but no variable 24 Coordinate plane a coordinate system used to graph numbers on, has an x and a y axis 25 x-axis horizontal line on a coordinate plane 26 y-axis vertical line on a coordinate plane 27 origin (0,0) on a coordinate plane, where the x and y axis meet 28 quadrant 4 corners of a coordinate plane 29 ordered pair pair of number used to identify a specific point on a coordinate plane 30 x coordinate first number in an ordered pair 31 y coordinate second number in an ordered pair ________________________________________________________________________ 32 Associative Property can change grouping (parenthesis) without changing the answer, works with addition and multiplication 33 Identity property of addition anything plus zero is itself 34 Identity property of multiplication anything times one is itself 35 Commutative Property changing the order of the numbers doesn’t change the answer, works with addition and multiplication 36 Inverse Property a number added to its opposite is zero 37 Distributive Property take the number outside the parenthesis and multiply it times everything inside parenthesis a(b+c) = ab + ac 38 sum answer to an addition problem 39 difference answer to a subtraction problem 40 product answer to a multiplication problem 41 quotient answer to a division problem 42 perfect square the product of an integer times itself 43 Fractions Part of a whole. A number written with the bottom part (the denominator) telling you how many parts the whole is divided into, and the top part (the numerator) telling how many you have. 44 Numerator the number on top of a fraction bars. 45 Denominator the number on the bottom of a fraction (down under the fraction bar). 46 Mixed Number a number that has a whole number part and a fraction part. 47 Improper Fraction a fraction whose numerator is greater than or equal to the denominator. 48 Reciprocal (multiplicative inverse) two nonzero number whose product is 1. 49 Expression a number sentence containing numbers, operations, and sometimes variables 50 Equation a number sentence containing numbers, operations, and sometimes variables and an equal sign 51 Formula a rule showing a relationship 52. ratio a comparison of two numbers using division: can be written as a fraction, with a colon: or a to b 53. unit rate a rate that has a denominator of one unit 54. rate a ratio of two quantities measured in different units 55. proportion an equation that states that two ratios are equal 56. scale a relationship between a drawing’s dimensions and the actual dimensions 57. Straight angle An angle that measures exactly 180 58. Complimentary angles Two angles that add up to 90 59. Noncolinear points Points that are not on the same line 60. Intersection The set of points that occur in two figures 61.Angle A figure formed by 2 rays that have the same endpoint 62. Midpoint The middle point in a line segment 63. Acute angle An angle that measures less than 90 64. Right Angle An angle that measures exactly 90 65. Obtuse angles An angle that measures between 90 and 180 66. Adjacent angle 2 angles that share a ray 67. Congruent segments Segments that are the same length 68. Angle bisector A line that divides and angle into 2 equal parts 69. Line a collection of connecting points that extends forever in 2 directions 70. Line segment Line that has 2 endpoints 71. Perpendicular Lines Lines that intersect forming right angles 72. Vertical angles angles opposite each other when 2 lines intersect; have equal measure 73. Corresponding angles angles that occupy same place on a different line 74. Parallel lines two lines on same plane that do not intersect 75. transversal a line that crosses at least 2 other lines (usually parallel) 76. skew lines 2 nonparallel lines in space that do not intersect 77. collinear points points on the same line 78. supplementary angles two angles that add up to 180 degrees, also known as linear pair 79. square root the operation used to figure out what number times itself will give the square 80. leg of a triangle the two sides that form the right angle of a triangle 81. hypotenuse the longest side of a right triangle, the angle across from the right angle 82. Pythagorean Theorem the formula used to find the side lengths of a right triangle a2+b2=c2 83. Pythagorean triple set of three positive integers that when inserted in to Pythagorean Theorem make the statement true 84. reflection creates a mirror image of each point in a figure 85. transformation changing an image by reflection, translation, rotation, or dilation 86. translation sliding a figure to a new place on a coordinate grid 87. rotation turning a figure around a common point 88. dilation stretching or shrinking a figure by a scale factor 89. scale factor the ratio of the side length after the dilation to the ratio of the side length before the dilation 90. line symmetry when one half of a figure is a mirror image of the other half of the figure