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Across 5. point where a tangent touches a circle 7. an arc that is 180 10. a special chord that goes through the center of the circle 12. a point equal distant from all points on the circle 13. a part of a circle between two points 14. a set of points the same distance from a center point 16. a polygon outside of a circle where each side is tangent to the circle 18. a line that touches but does not intersect a circle at exactly 1 point

Down 1. a polygon inside of a circle whose vertices lie on the circle. 2. circles that share the same center 3. a segment from the center of the circle to the edge of the circle 4. a line that intersects a circle at 2 points 6. distance around a circle 8. more than one radius 9. a circle that is divided into fourths 11. having exactly the same size and shape 15. ratio of circumference to the diameter fo a circle...rounded to 3.14 or 22/7 17. any segment with endpoints on the circle