Geometry crossword

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Across
  1. 2. a solid from a circular base to a point.
  2. 5. a plane figure with eight sides
  3. 9. the line that touches this circle at a single point.
  4. 11. when a straight line that passes through another straight line and their intersection forms a right angle
  5. 13. a round solid figure in 3 dimensions
  6. 14. a straight line that divides an angle into two equal parts.
  7. 15. a figure with a square or triangular base and sides that meet in a point at the top
Down
  1. 1. a plane figure with five straight sides
  2. 3. cuts a segment in the middle
  3. 4. the part of the circumference of a circle
  4. 6. the biggest side of a triangle
  5. 7. a plane figure with opposite sides parallel
  6. 8. a part of a line
  7. 10. the continuous line forming a figure
  8. 12. in a right-angle triangle, this is the side adjacent to the hypothenuse