Crossword 2

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Across
  1. 3. A line at which a surface terminates
  2. 5. Perpendicular segment from the vertex of a triangle to the side opposite to it
  3. 6. Figure closed and having many sides
  4. 9. An angle inferior to 90°
  5. 10. A meeting point of two lines that form an angle
  6. 11. Segment joining a vertex of a triangle to the midpoint of the opposite side
Down
  1. 1. The outside of a circle
  2. 2. It's a point where straight lines intersect
  3. 4. six sided shape
  4. 7. Something that is the same on both sides of a center point or axis
  5. 8. Two straight lines that never touch themselves