Introduction to Euclid's Geometry

Question

Which of the following statements is incorrect?
  • A line segment has definite length
  • Three lines are concurrent if and only if they have a common point
  • Two lines drawn in a plane always intersect at a point
  • One and only one line can be drawn passing through a given point and parallel to a given line 

Answer

C.

Two lines drawn in a plane always intersect at a point

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