Christmas Tree Geometry

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Across
  1. 1. the month leading up to Christmas
  2. 4. an angle greater than 90 degrees but less than 180 degrees
  3. 6. French word for Christmas
  4. 7. circular bases connected by a curved surface
  5. 8. The intersection point of two sides of a plane figure
  6. 11. a triangle with one internal angle equal to 90 degrees
  7. 12. location, no shape or size
  8. 14. a triangle with all sides equal and all angles equal
  9. 16. An angle less that 90 degrees but greater that 0
  10. 18. singing Christmas songs
  11. 19. point halfway between the end points
  12. 21. a 3D circle, a set of points in space
  13. 24. a triangle having three unequal sides and angles
  14. 28. Points on the same line
  15. 29. month of Christmas
  16. 30. a 90 degree angle
Down
  1. 1. a ray that cuts the angle exactly in half, making two equal angles
  2. 2. a spiritual being acting as a messenger of God
  3. 3. triangles that have the same size and shape. Corresponding angles have the same measure, and the corresponding sides have the same length
  4. 5. man who brings presents for children on the night before Christmas
  5. 9. Socks hung for santa to fill
  6. 10. one part of a line
  7. 13. are the same distance from a given point. no faces, edges, or vertices
  8. 15. made up of points and has no thickness or width
  9. 17. the birth of Jesus Christ
  10. 20. flat surface made up of points
  11. 22. a prism, two parallel congruent bases connected by faces
  12. 23. the small town in the Middle East believed to be the birthplace of Jesus Christ
  13. 25. a solid with a circular base connected by a curved surface to a single angle
  14. 26. Santa's workers
  15. 27. points on the same plane