CollegeGeometry1.2

Card Set Information

Author:
clkottke
ID:
129099
Filename:
CollegeGeometry1.2
Updated:
2012-01-19 20:38:38
Tags:
Geometry
Folders:

Description:
Geometry Vocabulary
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user clkottke on FreezingBlue Flashcards. What would you like to do?


  1. intersection
    the points that two geometric figures share
  2. intuition
    drawing a conclusion through insight
  3. inverse
    relative to the statement “If P, then Q,” this statement has the form “If not P, then not Q”
  4. isosceles trapezoid
    a trapezoid that has two congruent legs(its nonparallel sides)
  5. isosceles triangle
    a triangle that has two congruent sides
  6. kite
    a quadrilateral that has two distinct pairs of congruent adjacent sides
  7. lateral area
    the sum of areas of the lateral faces of a solid orthe area of the curved lateral surface, excluding the base area(s) (as in prisms, pyramids, cylinders, and cones)
  8. legs of isosceles triangle
    the two congruent sides of the triangle
  9. legs of right triangle
    the two sides that form the right angle of the triangle
  10. legs of trapezoid
    the two nonparallel sides of the trapezoid
  11. lemma
    a theorem that is introduced and proved so that a later theorem can be proved
  12. line of centers
    the line (or line segment) that joins the centers of two circles
  13. line segment
    the part of a line determined by two points and all points on the line that lie between those two points
  14. locus
    the set of all points that satisfy a given condition or conditions
  15. octahedron (regular)
    a polyhedron with eight congruent faces that are equilateral triangles
  16. opposite rays
    two rays having a common end point and which together form a line
  17. orthocenter of triangle
    the point of concurrence for the three altitudes of the triangle
  18. parallel lines (planes)
    two lines in a plane (or two planes) that do not intersect
  19. parallelogram
    a quadrilateral that has two pairs of parallel sides
  20. parallelepiped
    a right rectangular prism; a box
  21. pentagon
    a polygon that has exactly five sides
  22. perimeter of polygon
    the sum of the lengths of the sides of the polygon
  23. perpendicular bisector of line segment
    a line (or part of aline) that is both perpendicular to a given line segment and bisects that line segment
  24. perpendicular lines
    two lines that intersect to form congruent adjacent angles
  25. pi ()
    the constant ratio of the circumference C of a circle to the length of its diameter, this ratio is commonly approximated by the fraction or the decimal 3.1416
  26. point of tangency (contact)
    the point at which a tangent to a circle touches the circle
  27. polygon
    a plane figure whose sides are line segments that intersect only at their endpoints
  28. polyhedron
    a solid figure whose faces are polygons that intersect other faces along common sides of the polygons
  29. postulate
    a statement that is assumed to be true
  30. Quadratic Formula
    • the formula ,
    • which provides solutions for the equation ,where a, b, and c are real numbers and
  31. quadrilateral
    a polygon that has exactly four sides
  32. radian
    the measure of a central angle of a circle whose intercepted arc has a length equal to the radius of the circle
  33. radius
    the line segment that joins the center of a circle (or sphere) to any point on the circle (or sphere)
  34. ratio
    a comparison between two quantities , generally written or a:b
  35. ray
    the part of a line that begins at a point and extends infinitely far in one direction
  36. rectangle
    a parallelogram that contains a right anglereflex angle an angle whose measure is between 180°and 360°
  37. regular polygon
    a polygon whose sides are congruent and whose interior angles are congruent
  38. regular polyhedron
    a polyhedron whose edges are congruent and whose faces are congruent
  39. major arc
    an arc whose measure is between 180° and 360°
  40. means of a proportion
    • the second and third terms of a proportion; in ,
    • b and c are the means
  41. median of trapezoid
    the line segment that joins the midpoints of the two legs (nonparallel sides) of the trapezoid
  42. median of triangle
    the line segment joining a vertex of the triangle to the midpoint of the opposite side
  43. midpoint
    the point on a line segment (or arc) that separates the line segment (arc) into two congruent parts
  44. minor arc
    an arc whose measure is between 0° and 180°
  45. nonagon
    a polygon that has exactly nine sides
  46. noncollinear points
    three or more points that do not lie on the same line
  47. noncoplanar points
    four or more points that do not lie in the same plane
  48. obtuse angle
    an angle whose measure is between 90°and 180°
  49. obtuse triangle
    a triangle that has exactly one interior angle that is obtuse
  50. octagon
    a polygon that has exactly eight sides
  51. regular prism
    a right prism whose bases are regular polygons
  52. regular pyramid
    a pyramid whose base is a regular polygon and whose lateral faces are congruent isosceles triangles
  53. rhombus
    a parallelogram with two congruent adjacent sides
  54. right angle
    an angle whose measure is exactly 90°
  55. right circular cone
    a cone in which the line segment joining the vertex of the cone to the center of the circular base is perpendicular to the base
  56. right circular cylinder
    a cylinder in which the line segment joining the centers of the circular bases is perpendicular to the plane of each base
  57. right prism
    a prism in which lateral edges are perpendicular to the base edges that they intersect
  58. right triangle
    a triangle in which exactly one interior angle is a right angle
  59. scalene triangle
    a triangle in which no two sides are congruent
  60. secant
    in a right triangle, the ratio
  61. secant of circle
    a line (or part of a line) that intersects a circle at two points
  62. sector of circle
    the plane region bounded by two radii of the circle and the arc that is intercepted by the central angle formed by those radii
  63. segment of circle
    the plane region bounded by a chord and a minor arc (major arc) that has the same endpoints as that chord semicircle the arc of
  64. semicircle
    the arc of a circle determined by a diameter; an arc of a circle whose measure is exactly 180°
  65. set
    any collection of objects, numbers, or points
  66. similar polygons
    polygons that have the same shape
  67. sine
    in a right triangle, the ratio
  68. skew quadrilateral
    a quadrilateral whose sides do not all lie in one plane
  69. slant height of cone
    any line segment joining the vertex of the cone to a point on the circular base
  70. slant height of regular pyramid
    a line segment joining the vertex of the pyramid to the midpoint of a base edge of the pyramid
  71. slope
    a measure of the steepness of a line; in the rectangular coordinate system, the slope m of the line through (x1,y1) and (x2,y2) is , where x1 x2
  72. sphere
    the set of points in space that are at a fixed distance from a given point (the center of the sphere)
  73. straight angle
    an angle whose measure is exactly 180°; an angle whose sides are opposite rays
  74. straightedge
    an idealized instrument used to construct parts of lines
  75. volume
    the measurement, in cubic units, of the amount of space within a bounded region of space
  76. vertical angles
    a pair of angles that lie in opposite positions when formed by two intersecting lines
  77. vertex of polyhedron
    any point at which three edges of the polyhedron meet
  78. vertex of polygon
    any point at which two sides of the polygon meet
  79. vertex of isosceles triangle
    the point at which the two congruent sides of the triangle meet
  80. vertex of angle
    the point at which the two sides of the angle meet
  81. vertex angle of isosceles triangle
    the angle formed by the two congruent sides of the triangle
  82. valid argument
    an argument in which the conclusion follows logically from previously stated (and accepted) premises or assumptions
  83. union
    the joining together of any two sets, such as geometric figures
  84. triangle inequality
    a statement that the sum of the lengths of two sides of a triangle cannot be greater than the length of the third side
  85. triangle
    a polygon that has exactly three sides
  86. trapezoid
    a quadrilateral having exactly two parallel sides
  87. transversal
    a line that intersects two or more lines, intersecting each at one point
  88. torus
    a three-dimensional solid that has a “doughnut” shape
  89. theorem
    a statement that follows logically from previous definitions and principles; a statement that can be proved
  90. tetrahedron (regular)
    a four-faced solid in which the faces are congruent equilateral triangles
  91. tangent line of circle
    a line (or part of a line) that touches acircle at only one point
  92. tangent circles
    two circles that have one point in common;the circles may be externally tangent or internally tangent
  93. tangent
    in a right triangle, the ratio
  94. symmetry with respect to a point (P )
    figure for which everypoint A has a second point C on the figure for which P is the midpoint of
  95. symmetry with respect to a line (l)
    figure for which everypoint A has a second point B on the figure for which l is the perpendicular bisector of
  96. surface area
    the measure of the total area of a solid; the sum of the lateral area and base area in many solid figures.
  97. supplementary angles
    two angles whose sum of measuresis 180°

What would you like to do?

Home > Flashcards > Print Preview