maths

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Across
  1. 1. a line segment intersecting at two points
  2. 6. numeric measures the degree of certainty of the occurence of the event
  3. 7. all sides are equal
  4. 9. numbers arrange in a definite order
Down
  1. 2. half of radius
  2. 3. a quadrilateral whose opp. sides are parallel & equal
  3. 4. opp. sides&diagonal are equal
  4. 5. a figure made of 3 cones
  5. 8. a sraight line pasing & intersecting at two points