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To divide AB in ratio 4 : 5, after marking A9 and joining A9 to B, the line through A4 to the required point must be drawn:

Class 10Division of a Line SegmentGeometry
  • APerpendicular to A9B
  • BParallel to A9B
  • CParallel to AB
  • DThrough B

Step-by-Step Solution

Through the point that splits the ratio (A4) we draw a line parallel to A9B; it meets AB at the dividing point (Basic Proportionality Theorem).
Answer: B) Parallel to A9B

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