Geometry symbol

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Across
  1. 5. - A closed shape with many straight sides.
  2. 6. - An up-and-down < line.
  3. 7. - Four-sided polygon like a square.
  4. 11. - Polygon with three sides and three <.
  5. 12. - A line connecting non-adjacent corners.
  6. 13. - Figures with proportional < but not same size.
  7. 14. - A closed shape with all points equidistant.
Down
  1. 1. - Triangle with two equal sides and angles.
  2. 2. - Lines that never <, like railroad tracks.
  3. 3. - Geometric shapes with < sides and angles.
  4. 4. - A sharp < across two rays.
  5. 5. - Lines that intersect at right angles.
  6. 8. - Distance from the center to the < of a circle.
  7. 9. - Polygon with six equal <.
  8. 10. - An angle > 90 degrees.