Vocabulary for Geometry

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Across
  1. 2. a three sides polygon.
  2. 4. a 3d figure with congruent and parallel faces.
  3. 5. faces and surfaces of a 3d figure.
  4. 7. an angle that measures exactly 180 degrees.
  5. 9. flat 2d surface.
  6. 11. a triangle with two equal sides; the angles opposite are also equal.
  7. 13. the line segment of a many sided figure.
  8. 16. a closed shape in 2d or 3d.
  9. 18. up/down position.
  10. 19. study of properties, measurement, relationship of points, lines, angles, surfaces and solids.
  11. 20. an angle that measures 90 degrees.
  12. 22. equal in size and shape.
  13. 23. a shape that begins and ends at the same point.
Down
  1. 1. a quality that something has, such as size, color, height and so on.
  2. 3. shapes shapes with two dimensions: length and width.
  3. 4. lines that are right angle (90 degrees) to each other.
  4. 6. put into groups based on properties.
  5. 7. triangle with none of the sides the same length.
  6. 8. sides
  7. 10. a closed plane figure that has 3 or more sides.
  8. 12. a shape with line segments that are not connected at one point.
  9. 14. size, sides, angles, color and/or shape.
  10. 15. a point where 2 line segments meet to form an angle.
  11. 17. two lines in a plane that do not intersect.
  12. 21. triangle with three equal sides and three equal angles.