Essential Math Vocabulary: Geometry, List 1

This list focuses on triangles and circles.
20 words 1142 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. angle
    the space between two lines or planes that intersect
  3. arc
    a continuous portion of a circle
  4. area
    the extent of a two-dimensional surface within a boundary
  5. chord
    a straight line connecting two points on a curve
  6. circle
    a plane curve with every point equidistant from the center
  7. circumference
    the length of the closed curve of a circle
  8. degree
    a measure for arcs and angles
  9. diameter
    the length of a straight line through the center of a circle
  10. hypotenuse
    the side of a right triangle opposite the right angle
  11. isosceles
    (of a triangle) having two sides of equal length
  12. obtuse
    of an angle, between 90 and 180 degrees
  13. perimeter
    a line enclosing a plane area
  14. pi
    the ratio of the circumference to the diameter of a circle
  15. radius
    the length of a line between a circle's center and perimeter
  16. ratio
    relation with respect to comparative quantity or magnitude
  17. right
    having the axis perpendicular to the base
  18. scalene
    having three sides of different lengths
  19. triangle
    a three-sided polygon
  20. trigonometry
    the mathematics of three-sided figures and their functions
Created on Tue Jul 13 10:35:54 EDT 2021 (updated Tue Jul 13 11:04:54 EDT 2021)

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