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Across 4. An angle with a measure greater than 90 degrees 8. An angle with a measure of 180 degrees 11. An angle outside of a figure 15. An angle with a measure of 90 degrees 17. A polygon with sides that are all the same 19. A polygon with 1 million sides 22. A shape with 5 sides 23. A greek word for angle 24. A shape with 9 sides 25. A greek word for many

Down 1. A polygon with sides not all the same sizes 2. An angle with a measure less than 90 degrees 3. A shape with 6 sides 5. A shape with 4 sides 6. A shape with 8 sides 7. A type of symmetry where a shape can be reflected onto itself about a line 9. An angle inside a figure 10. Two angles that add up to 90 degrees. 12. A shape with 3 sides 13. A type of symmetry where a shape can be rotated about a point through an angle of less than 360 degrees 14. Two angles that add up to 180 degrees 16. A shape with 7 sides 18. The unit used in the measure of an angle 20. A shape with 10 sides 21. A 2 dimensional figure with straight lines