# GRE Math

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### Explore the Words

definitions & notes only words
1. hypotenuse
the side of a right triangle opposite the right angle
2. circumference
the length of the closed curve of a circle
3. supplementary
functioning in a supporting capacity
4. perimeter
a line enclosing a plane area
5. cone
a shape with a circular base and sides tapering to a point
6. cylinder
a surface generated by rotating a line around a fixed line
7. ellipsoid
a surface whose plane sections are all ellipses or circles
8. pyramid
a polyhedron having a polygonal base and triangular sides
9. torus
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
10. parallelogram
a quadrilateral whose opposite sides are parallel and equal
11. trapezoid
a quadrilateral with one pair of parallel sides
12. acute angle
an angle less than 90 degrees but more than 0 degrees
13. obtuse angle
an angle between 90 and 180 degrees
14. perpendicular
intersecting at or forming right angles
15. congruent
corresponding in character or kind
16. slope
be at an angle
17. isosceles triangle
a triangle with two equal sides
18. scalene triangle
a triangle with no two sides of equal length
19. bisect
cut in half or cut in two
20. Pythagorean
of or relating to Pythagoras or his geometry
21. equilateral triangle
a three-sided regular polygon
a four-sided polygon
23. cube
a three-dimensional figure with six equal squares as faces
24. sector
a plane figure bounded by two radii and the arc of a circle
25. secant
a straight line that intersects a curve at two or more points
26. diameter
the length of a straight line through the center of a circle
27. inscribed
written on or in a surface
28. equidistant
exactly as far from one point as from another
29. chord
a straight line connecting two points on a curve
30. rectangular
having four right angles
31. ordinate
the value of a coordinate on the vertical axis
32. abscissa
the value of a coordinate on the horizontal axis
33. counterclockwise
in a direction opposite to the direction in which the hands of a clock move
34. intercept
seize, interrupt, or stop something on its way
35. fraction
the quotient of two rational numbers
36. numerator
the dividend of a fraction
37. denominator
the divisor of a fraction
38. reciprocal
concerning each of two or more persons or things
39. absolute value
a real number regardless of its sign
40. ratio
relation with respect to comparative quantity or magnitude
41. proportional
having a constant ratio
42. inverse
turned backward in order or nature or effect
43. pound
16 ounces avoirdupois
44. inch
a unit of length equal to one-twelfth of a foot
45. index
a numerical scale used to compare variables with one another
46. commutative
independent of order; as in e.g. "a x b = b x a"
47. cent
a fractional monetary unit of several countries
48. penny
a coin worth one-hundredth of the value of the basic unit
49. nickel
a United States coin worth one twentieth of a dollar
50. dime
a United States coin worth one tenth of a dollar
51. quarter
United States or Canadian coin worth one fourth of a dollar
52. revenue
the entire amount of income before any deductions are made
53. interest
a fixed charge for borrowing money
54. progression
the act of moving forward, as toward a goal
55. arithmetic
mathematics dealing with numerical calculations
56. arithmetic progression
(mathematics) a progression in which a constant is added to each term in order to obtain the next term
57. arithmetic mean
the sum of the values of a random variable divided by the number of values
58. geometric progression
(mathematics) a progression in which each term is multiplied by a constant in order to obtain the next term
59. consecutive
one after the other
60. geometric series
a geometric progression written as a sum
61. inclusive
encompassing much or everything
62. toss
the act of flipping a coin
63. die
lose all bodily functions necessary to sustain life
64. exclusive
admitting or accepting only a particular group
65. mutually exclusive
unable to be true or exist at the same time
66. deck
a pack of 52 playing cards
67. flip
the act of throwing a coin
68. straight angle
an angle of 180 degrees
69. four-sided
having four sides
70. tangent
a line that touches a curve at only one point
71. intersect
meet or cross at a point; overlap
72. proportion
relation with respect to comparative quantity or magnitude
Created on October 8, 2012 (updated October 8, 2012)