Geometry Vocab

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Geometry Vocab
2012-02-26 11:44:43

Geometry Words
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  1. Point
    location in space
  2. LINE
    a series of points that extends in two opposite directions without end
  3. Segment
    Consists of two endpoint and all the points of the line between the endpoints.
  4. Ray
    consists of two endpoints and all the points of the line on one side of the endpoint.
  5. plane
    a flat surface with no thickness that extends in all directions on the surface
  6. Intersecting lines
    • lines that have exactly one point in common
  7. parallel lines
    lines that have no points in common
  8. Skew lines
    lines that are not parallel and do not intersect
  9. Angle
    a figure formed by two rays with a common endpoint.
  10. vertex
    a point of intersection of two sides of an angle of figure
  11. degrees
    a measurment used to measure angles
  12. acute angle
    measure less than 90 degrees
  13. right angle
    measure 90 degrees
  14. obtuse angle
    measure between 90 and 180 degrees
  15. straight angle
    measure 180 degrees
  16. perpendicular lines
    lines that intersect forming a right angle
  17. complementary angles
    • if the sum of two angles is 90 degree
    • it is complementary
  18. supplementary angles
    any two angles that add up to 180
  19. vertical angles
    two intersecting lines
  20. congruent angles
    angles with equal measures