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Across 1. each angular point of a polygon, polyhedron, or other figure 3. a part of the circumference of a circle or other curve 6. a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center) 7. the space (usually measured in degrees) between two intersecting lines or surfaces at or close to the point where they meet 10. a straight line joining the ends of an arc 12. a straight line passing from side to side through the center of a body or figure, especially a circle or sphere 13. side by side and having the same distance continuously, between them 14. a four-sided figure 17. a solid geometric figure whose two end faces are similar, equal, and parallel rectilinear figures, and whose sides are parallelograms 19. exactly a 90° angle 20. next to or adjoining something else 21. a half of a circle or of its circumference 23. having all its sides of the same length 25. completing or enhancing something 28. a plane figure with nine straight sides and nine angles 29. having sides unequal in length 30. a dot or other punctuation mark, in particular a period 31. having two sides of equal length 32. neither parallel nor at right angles to a specified or implied line

Down 2. a three sided shape with three corners (or points) 3. the extent or measurement of a surface or piece of land or shape 4. an angle less then 90° 5. each of the parts into which something is or may be divided 6. a solid geometric figure with straight parallel sides and a circular or oval section 8. expressing a compliment; praising or approving 9. a flat surface on which a straight line joining any two points, on it would wholly lie 11. the continuous line forming the boundary of a closed geometric figure 15. a thing that is arranged radially, in particle 16. an angle more then 90° 18. a point or line common to lines or surfaces that intersect 22. identical in form; coinciding exactly when superimposed 24. a plane figure with at least three straight sides and angles, and typically five or more 26. a long, narrow mark or band 27. a straight line from the center to the circumference of a circle or sphere