Geometry puzzle #3

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Across
  1. 4. a line intersecting two or more lines
  2. 6. the quantity under a radical sign
  3. 8. sides of a object
  4. 9. another name for wideness
  5. 12. alternate sides of the transversal on the outside
  6. 18. formula to find the midpoint(s)
  7. 19. the altitude of the lateral faces
  8. 20. the perpendicular distance from one of the vertices to the opposite side (height)
  9. 21. a angle with its vertex at the center of a circle
  10. 22. solid body having a triangular base
  11. 23. root the square of a number
  12. 24. distance upward; how tall something is
  13. 25. an expression in which radical signs appear
Down
  1. 1. sign the symbol indicating a square root
  2. 2. used to find the distance between two points in a plane
  3. 3. alternate sides of the transversal on the inside
  4. 5. the amount of space inside of a object
  5. 7. the fraction is reduced as much as possible is called??
  6. 10. the bottom of a triangle/square
  7. 11. a figure is made from two or more geometric figures
  8. 13. a perpendicular from the center of a regular polygon to one of its sides
  9. 14. measurement from one point to another
  10. 15. alternate sides on the same side of the transversal
  11. 16. the side of a right triangle opposite the right angle
  12. 17. a solid figure having many faces