The ACT Math Test: Geometry, List 2

Review these terms and concepts that are likely to appear on the ACT Math Test.
25 words 1850 learners

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Full list of words from this list:

words only definitions & notes
  1. ellipse
    a closed plane curve with an oval shape
  2. diagonal
    a straight line connecting nonadjacent vertices of a polygon
  3. hexagon
    a six-sided polygon
  4. parallelogram
    a quadrilateral whose opposite sides are parallel and equal
  5. area
    the extent of a two-dimensional surface within a boundary
  6. perimeter
    a line enclosing a plane area
  7. perpendicular
    intersecting at or forming right angles
  8. coordinate
    a number that identifies a position relative to an axis
  9. plane
    an unbounded two-dimensional shape
  10. polygon
    a closed plane figure bounded by straight sides
  11. ratio
    relation with respect to comparative quantity or magnitude
  12. rectangle
    a parallelogram with four right angles
  13. rotation
    a transformation in which the coordinate axes are turned
  14. slope
    the property of a line that departs from the horizontal
  15. prism
    a polyhedron with two congruent and parallel faces
  16. pyramid
    a polyhedron having a polygonal base and triangular sides
  17. cone
    a shape with a circular base and sides tapering to a point
  18. cylinder
    a solid bounded by a round surface and two parallel planes
  19. sphere
    a solid figure bounded by a round surface
  20. symmetry
    exact reflection of form on opposite sides of a line
  21. postulate
    a proposition accepted as true to provide a logical basis
  22. theorem
    a proposition deducible from basic postulates
  23. trapezoid
    a quadrilateral with one pair of parallel sides
  24. vertex
    the point of intersection of lines
  25. volume
    the amount of 3-dimensional space occupied by an object
Created on Tue Dec 15 17:17:54 EST 2020 (updated Mon Dec 21 15:11:12 EST 2020)

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