Middle School Geometry: List 3

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 723 learners

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Full list of words from this list:

words only definitions & notes
  1. parallel
    being everywhere equidistant and not intersecting
  2. parallelogram
    a quadrilateral whose opposite sides are parallel and equal
  3. partition
    divide into parts, pieces, or sections
  4. perimeter
    a line enclosing a plane area
  5. perpendicular
    intersecting at or forming right angles
  6. pi
    the ratio of the circumference to the diameter of a circle
  7. plane
    an unbounded two-dimensional shape
  8. plane section
    the area created by a plane cutting through a solid
  9. point
    a geometric element that has position but no extension
  10. polygon
    a closed plane figure bounded by straight sides
  11. prism
    a polyhedron with two congruent and parallel faces
  12. proof
    a formal series of statements showing that something is true
  13. protractor
    drafting instrument used to draw or measure angles
  14. pyramid
    a polyhedron having a polygonal base and triangular sides
  15. quadrant
    any of the four areas into which a plane is divided
  16. quadrilateral
    a four-sided polygon
  17. radius
    the length of a line between a circle's center and perimeter
  18. ray
    (mathematics) a straight line extending from a point
  19. right angle
    the 90 degree angle between two perpendicular lines
  20. right triangle
    a triangle with one right angle
Created on Mon Jul 25 14:31:48 EDT 2022 (updated Mon Jul 25 14:44:59 EDT 2022)

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