Middle School Geometry: List 1

If you feel obtuse when it comes to angles, review this list of geometry terms. You'll learn about planes, polygons, perimeter, and more. It's as easy as pi!

Here are links to our lists in the collection: List 1, List 2, List 3, List 4
20 words 2995 learners

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Full list of words from this list:

words only definitions & notes
  1. acute
    (of an angle) less than 90 degrees
  2. acute angle
    an angle less than 90 degrees but more than 0 degrees
  3. adjacent
    having a common boundary or edge
  4. angle
    the space between two lines or planes that intersect
  5. arc
    a continuous portion of a circle
  6. area
    the extent of a two-dimensional surface within a boundary
  7. base
    the bottom side of a geometric figure
  8. center
    a point equidistant from the ends of a line
  9. circle
    a plane curve with every point equidistant from the center
  10. circumference
    the length of the closed curve of a circle
  11. clockwise
    in the direction that the hands of a clock move
  12. complementary angles
    two angles whose sum is a right angle
  13. cone
    a shape with a circular base and sides tapering to a point
  14. congruent
    coinciding when superimposed
  15. coordinate
    a number that identifies a position relative to an axis
  16. coordinate system
    a system that uses coordinates to establish position
  17. counterclockwise
    in a direction opposite to the direction in which the hands of a clock move
  18. cube
    a three-dimensional figure with six equal squares as faces
  19. cylinder
    a solid bounded by a round surface and two parallel planes
  20. volume
    the amount of 3-dimensional space occupied by an object
Created on Mon Jul 25 14:15:17 EDT 2022 (updated Mon Jul 25 14:44:41 EDT 2022)

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