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Sunita drew two overlapping triangles whose bases lie along the same straight line. What is the least number of straight lines she needed?

Competition practiceCounting Figures
  • A4
  • B6
  • C7
  • D5

Step-by-Step Solution

The two bases lie on one line, so they can be drawn as a single stroke. Add the 4 slanting sides: .
Answer: D) 5

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