Discovering Geometry Crossword Puzzle

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Across
  1. 2. All diagonals are inside the polygon
  2. 4. Poimts which are on the same plane
  3. 6. The angle with the vertex being the center of a circle
  4. 8. An arc of a circle smaller than a semicircle
  5. 11. An unbroken and continuous part of a circle between 2 points on the edge
  6. 12. An arc of a circle larger than a semicircle
  7. 13. Angles that combined equal 90 degrees
  8. 16. Equivilent, or Equal to
  9. 18. Half of a circle
  10. 20. The first and last points on a line segment
  11. 21. The given point in the middle of the circle
  12. 22. A geometric character with a design that is the same on both sides
Down
  1. 1. A closed figure in a plane, formed by connecting endpoints with segments
  2. 2. Poimts on the same line
  3. 3. The endpoint where the two rays of an angle meet
  4. 4. A tool used to make circles
  5. 5. A design that is mirrored across the line of symmetry
  6. 7. A 4 sided shape with 2 sets of parallel sides and 2 sets of congruent sides and angles
  7. 9. A circle with a polygon inside it, and all the verticies touching the outer points
  8. 10. A triangle that has a right angle
  9. 14. Angles which share a common vertex and ray, and are on the same line
  10. 15. The unit of measurment used to calculate angles
  11. 17. The nonequal side of an isosceles triangle
  12. 19. The distance from the center point to the edge of the circle