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1 GRE / GMATmath,! abscissa, scalene, intercept, markup, such that, break even. abscissa. (4, 2) 4abscissa, 2ordinate absolute value acre add adjacent angles altitude ; angle () acute angle (90 ) right angle obtuse angle ( ) straight angle (180) reflex angle ( ) approximation area : surface area, area of a circle= πr 2 arc A R ooooooo T arc RT x/ 360 ) x=60 arc RT 1/6 arithmetic, ascending order ( ) descending order ( ) associate law asymmetric average, arithmetic mean axis B bar graph base billion bisect, GMAT Source Book 1

2 break even ( ). C calculate cancel capacity (= volume) cardinal number : cf. ordinal number Celsius (= centigrade) : cf. Fahrenheit center chord ( ) circle circumference ( =2p r) clockwise : cf. counter-clockwise coefficient. 3x + 4y 3xcoefficient, 4ycoefficient common denominator complementary angles ( 90 ) cf. supplementary angles concave : cf. convex concentric circle coordinate coordinate plane x-axis(x)y-axis(y) cone (V= 1 2 p r h) 3 consecutive. : ) three consecutive odd integers ( 15, 17,19) constant continuous discontinuous. cf. consecutive cube ( V=e 3,e ) cubic meter 3 cubic root ( 8 = 2 ) cylinder (solid, V=p r 2 h) D decagon pentagon hexagon heptagon octagon decimals septagon ) 7, (place values): 7Thousands,6Hundreds,5Tens, 4Ones or Units,3Tenths,2Hundredths,1Thousandths. decimal point deduce, degree, degree measure denominator (=divisor) derive develop GMAT Source Book 2

3 diagonal diameter ( radius, circumference) difference digit (e.g digits to the right of the decimal point 3 ) dimension (1) (2). direct proportion : cf. inverse proportion distance dividend.. : = dividend( ), 3divisor( ), 1remainder( ). division x divided by y: y x x divided into y: y x divisor ; (dividend ) dotted line E edge (3 ) empty set equation ( ): linear equation(1 ), quadratic equation(2 ) equidistant : equidistance( ) equilateral : equilateral triangle equivalent, elapse, estimate ( ); evaluate even number exponent : ) 2 3 2base 3exponent( ). face (3 ) factor ; ) 728divisor or factor (28=(7)(4)). factorable figure formula fraction. () frequency d n Data Value X dnumerator ndenominator Frequency F Total 5 F Mean( ): ( 5)(2) + ( 4)(3) + ( 3)(1) 5 Median() : -4(3) Mode( ) : -4 Range( ) : -3- (-5) = 2 = -5 GMAT Source Book 3

4 function : F XXYy f : x y, y= f(x) yx G geometry greater than x : x( >x) greatest common divisor: ( 180= , 420= GCD2 2 35=60) grid H height heptagon hexagon horizontal hyperbolic hypotenuse hypotenuse I increase by... : decrease by... () When a sales volume increases by 50%, it increases 150% of the original volume. ( 50%, 150%.) in dollars, in terms of dollars. inequalities : > (greater than), (greater than or equal to), < ( less than) in terms of y: y integer (less than or equal to), (not equal to) nonzero integer consecutive even integers 0,2,4,6,8,, negative integer positive integer intercept, intersect intersection interest inscribed in : x()inscribed in y( ): invalid inverse. : 21/2 consecutive odd integers 1,3,5,7,, inverse proportion : cf. direct proportion isosceles 2 ( ) L GMAT Source Book 4

5 leg length less than y, y line linear equation 1 line graph lowest common denominator lowest common multiple ( LCM =1260) lowest term. : 4/6 2/3. M magnitude, matrix median ( 4,6,6,8,9,12 median( ) = 7 ) 2 mixed number. () 81/6 mode. () 1,2,2,3,3,3,4,7,7,7,7 7, mode 7. multiple. positive multiple, negative multiple multiply N natural number negative integer no greater than x: x, x no less than x: x, x numerator O obtuse angle ( > 90) octagon odd operation ordinate. (4,2) 2ordinate( ) 4abscissa( ). origin (e.g. x y ) P parallelogram partition 3. pentagon percentage GMAT Source Book 5

6 perimeter period permutation perpendicular pie graph plane plot point () polygon : regular polygon polynomial power, 2 n 2nth power, n. price cost, markup ( , 20 markup.) selling price actual price discount price prime factor prime number ( 2, 3, 5, 7, 11, 13,,)1 probability product proportion.( 2:3 = 8: X, X 12) () What proportion of the region is colored red? (?) Pythagorean Theorem ( triangle ) r h r 2 + s 2 = h 2 s Q quadrant 4, 4 ( 1/4 ) quadratic equation 2 quadrilateral quotient ( ) : cf. remainder R radius ( : radii) GMAT Source Book 6

7 rate. speed, rate,. constant rate average rate. x ratio : ratio of x to y = x : y, y real number ( ) reciprocal (2/3reciprocal( )3/2) rectangle rectangular solid rectangular coordinate plane x y 2 (= xy-plane) reduce to simplest form reflex angle region (2 ) remainder represent,. () Which of the following represents the value of x? ( x?) reverse. x 1/x. inverse revolution : root (1) (2) () round off ( ). round off to the nearest tenth 1 ( ) round off to the nearest hundreds ( 71,325 71,300) S scalene secant ( ) section 3 segment semicircle shaded region. cross-hatched region. side sign simplify : ) simplify a fraction ( ), simplify an equation ( ) solid GMAT Source Book 7

8 solid line, square : : square a number square meter square root square root of 2 ( 2 ): 1.4 square root of 3 ( 3 ): 1.7 sphere ( solid ) straight angle, 180 straight line substitution subtract such that,. (1) x is an integer such that x is greater than 0. (x0.) (2) x is a human such that x has the property of being smart. (x.) supplementary angles. 180 sum surface area symmetrical T table tangent (1) (2)... () A ball inside a cylinder is tangent to the inner walls of the cylinder. (.) tangent to a circle point of tangency ( Tpoint of tangency.) term. 3x + 3y term. trapezoid GMAT Source Book 8

9 triangle right triangle( ) U unit units digit. ones digit. () 7, ones or units tens digit hundreds digit thousands digit tenths digit hundredths digit (4) (5) (6) (7) (3) (2) thousandths digit (1) V variable value vertex ( : vertices) a c vertical vertical angle ab ( a+b = 180) volume, : the volume of a cube, sales volume W b d L1 L2 wage. salary. fringe benefitbonus. whole number ( ) width GMAT Source Book 9