geometry crossword puzzle

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Across
  1. 2. Angles: Two angles whose measures add up to 180 degrees.
  2. 3. A parallelogram with all sides equal in length.
  3. 4. Segment: A portion of a line defined by two endpoints.
  4. 6. A parallelogram with four right angles.
  5. 9. Lines or line segments that intersect at a right angle (90 degrees).
  6. 10. A quadrilateral with two pairs of parallel sides.
  7. 11. Angle: An angle measuring greater than 90 degrees but less than 180 degrees.
  8. 12. Angle: An angle measuring exactly 90 degrees.
  9. 13. A closed curve where all points are equidistant from a center point.
Down
  1. 1. Lines or line segments in the same plane that never intersect.
  2. 2. A rectangle with all sides equal in length.
  3. 5. A quadrilateral with exactly one pair of parallel sides. .
  4. 7. Angle: An angle measuring less than 90 degrees.
  5. 8. A four-sided polygon.