Geometry

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Across
  1. 2. An exact location in space shown by a dot.
  2. 7. A polygon with three sides.
  3. 8. An angle that is greater than 90° but less than 180°.
  4. 9. A quadrilateral with at least one pair of parallel sides.
  5. 13. A triangle with one right angle.
  6. 16. An angle that measures exactly 90°.
  7. 17. A quadrilateral with all sides equal in length.
  8. 19. A quadrilateral with two pairs of parallel sides.
  9. 21. An angle that is less than a right angle (less than 90°).
  10. 22. A closed shape made of straight sides.
Down
  1. 1. Lines that cross or meet at a point.
  2. 2. Lines that never touch and stay the same distance apart.
  3. 3. Lines that intersect to form right angles.
  4. 4. A triangle with one obtuse angle.
  5. 5. A straight path that goes on forever in both directions.
  6. 6. A line that divides a shape into two equal halves.
  7. 10. An angle that forms a straight line (180 degrees).
  8. 11. A quadrilateral with four right angles.
  9. 12. A triangle where all angles are acute.
  10. 14. A polygon with four sides.
  11. 15. Two rays that share the same endpoint.
  12. 18. A part of a line with two endpoints.
  13. 20. A line that starts at one point and goes on forever in one direction.