Geometry Vocabulary

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Across
  1. 1. an angle that is exactly 180°
  2. 4. a triangle with two equal sides
  3. 6. an angle that is exactly 90°
  4. 7. a 5-sided polygon
  5. 9. lines that stay the same distance from each other forever and never intersect
  6. 12. lines that cross at a point and form 90°angles
  7. 13. an 8-sided polygon
  8. 18. the angles on then outside of a figure when the sides are extended
  9. 21. a point where two or more lines come together; also called a corner on a polygon
  10. 22. a 6-sided polygon
  11. 26. two angles that are formed with a common side
  12. 27. angles that are across from each other; they do not share a side or vertex
  13. 29. an angle that is more than 90° and less than 180°
  14. 30. a line that cuts across a figure connecting two vertices that are not adjacent
  15. 31. contains two sets of parallel sides that form four 90° angles; all sides are congruent
  16. 32. contains two sets of parallel sides
Down
  1. 2. a triangle with three equal sides
  2. 3. two angles that add up to 90°
  3. 5. a quadrilateral that contains one set of parallel sides; also contains two opposite congruent sides
  4. 8. A triangle with all acute angles
  5. 10. two angles that add up to 180°
  6. 11. a word meaning equal or same; it is used to describe figures, sides, and angles
  7. 14. A triangle with one obtuse angle
  8. 15. contains two sets ofparallel sides that formfour 90° angles
  9. 16. the angles inside of a figure; in a triangle, these add up to 180°
  10. 17. a quadrilateral that contains on set of parallel sides and contains two right angles
  11. 19. A triangle with one right angle
  12. 20. a triangle with no equal sides
  13. 23. an angle that is less than 90°
  14. 24. contains two sets of parallel sides that are all congruent
  15. 25. lines that cross at a point
  16. 28. a four sided polygon; angles total 360°