MATHCounts Terms

Mrs. Gillespie (United States of America)
74 words 23 learners

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Full list of words from this list:

words only definitions & notes
  1. adjacent
    having a common boundary or edge
    adjacent angles
  2. apex
    the highest point of something
  3. arithmetic mean
    the sum of the values of a random variable divided by the number of values
  4. binary
    of or pertaining to a number system having 2 as its base
  5. circumference
    the length of the closed curve of a circle
    pi X diameter
  6. coefficient
    a constant number that serves as a measure of some property
  7. collinear
    lying on the same line
  8. composite number
    an integer that is divisible without remainder by at least one positive integer other than itself and one
  9. compound interest
    money earned on an original investment and accumulated gains
  10. concentric
    having a common center
  11. cone
    a shape with a circular base and sides tapering to a point
  12. convex
    curving or bulging outward
  13. coplanar
    lying in the same plane
  14. hexahedron
    any polyhedron having six plane faces
    cube
  15. decagon
    a closed shape with ten sides and ten angles
  16. diameter
    the length of a straight line through the center of a circle
  17. dodecahedron
    any polyhedron having twelve plane faces
  18. equiangular
    having all angles equal
  19. equidistant
    exactly as far from one point as from another
  20. equilateral
    having all sides of the same length
  21. factorial
    the product of all the integers up to and including a given integer
  22. finite
    bounded in magnitude or spatial or temporal extent
  23. frustum
    a truncated cone or pyramid
  24. geometric mean
    the mean of n numbers expressed as the n-th root of their product
  25. altitude
    elevation above sea level or above the earth's surface
    height
  26. hemisphere
    half of a round, three-dimensional shape
  27. heptagon
    a seven-sided polygon
  28. hypotenuse
    the side of a right triangle opposite the right angle
  29. integer
    any natural number or its negative, or zero
  30. isosceles triangle
    a triangle with two equal sides
  31. median
    relating to or situated in or extending toward the middle
  32. midpoint
    a point equidistant from the ends of a line or the extremities of a figure
  33. nonagon
    a nine-sided polygon
  34. palindrome
    a word or phrase that reads the same backward as forward
  35. parallelogram
    a quadrilateral whose opposite sides are parallel and equal
  36. percent
    a proportion in relation to a whole
  37. prime
    of an integer that cannot be factored into other integers
  38. perpendicular
    intersecting at or forming right angles
  39. prime factor
    the prime factors of a quantity are all of the prime quantities that will exactly divide the given quantity
  40. prism
    a polyhedron with two congruent and parallel faces
  41. probability
    a measure of how likely it is that some event will occur
  42. proper fraction
    a fraction with a numerator smaller than the denominator
  43. quadrant
    any of the four areas into which a plane is divided
  44. proportion
    ratio of the magnitude of a part to that of the whole
  45. radius
    a straight line from the center to the perimeter of a circle
  46. rate
    a quantity considered as a proportion of another quantity
  47. ratio
    relation with respect to comparative quantity or magnitude
  48. rational number
    an integer or the quotient of two integers
  49. irrational number
    a real number that cannot be expressed as a rational number
  50. ray
    a group of nearly parallel lines of electromagnetic radiation
  51. reciprocal
    concerning each of two or more persons or things
  52. revolution
    a single complete turn
  53. rhombus
    a parallelogram with four equal sides
  54. rotation
    the act of turning as if on an axis
  55. scalene triangle
    a triangle with no two sides of equal length
  56. slope
    the property of a line that departs from the horizontal
    y = mx + b

    m = SLOPE
  57. square root
    a number that when multiplied by itself equals a given number
  58. complementary angles
    two angles whose sum is a right angle
  59. tangent
    a line that touches a curve at only one point
  60. transformation
    a change in the position of a figure on a coordinate plane
  61. trapezoid
    a quadrilateral with one pair of parallel sides
  62. tetrahedron
    any polyhedron having four plane faces
  63. surface area
    the extent of a 2-dimensional surface enclosed within a boundary
  64. translation
    when the coordinate system origin moves to another position
  65. trisect
    cut in three
  66. union
    the act of making or becoming a single unit
  67. variable
    a symbol that is used in mathematical or logical expressions
  68. vertex
    the highest point of something
  69. vertical angle
    either of two equal and opposite angles formed by the intersection of two straight lines
  70. volume
    the property of something that is great in magnitude
    V = L X W X H
  71. x-axis
    the horizontal axis in a plane coordinate system
  72. y-axis
    the vertical axis in a plane coordinate system
  73. intercept
    the point at which a line intersects a coordinate axis
  74. cylinder
    a surface generated by rotating a line around a fixed line
Created on Thu Feb 07 11:43:36 EST 2013

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