High School Geometry: List 4

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, List 5
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Full list of words from this list:

words only definitions & notes
  1. perpendicular
    intersecting at or forming right angles
  2. pi
    the ratio of the circumference to the diameter of a circle
  3. plane
    an unbounded two-dimensional shape
  4. point
    a geometric element that has position but no extension
  5. polygon
    a closed plane figure bounded by straight sides
  6. postulate
    a proposition accepted as true to provide a logical basis
  7. prism
    a polyhedron with two congruent and parallel faces
  8. proof
    a formal series of statements showing that something is true
  9. proportionality
    harmonious arrangement or relation of parts or elements within a whole (as in a design)
  10. pyramid
    a polyhedron having a polygonal base and triangular sides
  11. radian
    the unit of plane angle adopted under the Systeme International d'Unites; equal to the angle at the center of a circle subtended by an arc equal in length to the radius (approximately 57.295 degrees)
  12. radius
    the length of a line between a circle's center and perimeter
  13. ratio
    relation with respect to comparative quantity or magnitude
  14. ray
    (mathematics) a straight line extending from a point
  15. rectangle
    a parallelogram with four right angles
  16. reflection
    transformation in which the direction of an axis is reversed
  17. regular polygon
    a polygon with all sides and all angles equal
  18. right angle
    the 90 degree angle between two perpendicular lines
  19. right triangle
    a triangle with one right angle
  20. rotation
    a transformation in which the coordinate axes are turned
Created on Mon Jul 25 16:15:13 EDT 2022 (updated Mon Jul 25 16:19:11 EDT 2022)

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