USP
UNIQUE STUDY POINTSumeet Sahu
Class 9 · Number Systems

You cannot count √2.
But you can draw it.

Every irrational number has an exact place on the number line. This lab lets you construct it, triangle by triangle, with your own hands.

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Why this activity matters

  • NCERT Class 9 Chapter 1 asks you to draw this spiral on paper. Here you can try it first without wasting sheets.
  • It proves something surprising: √2, √3, √5 are exact lengths, even though their decimals never end.
  • Every single triangle uses only one rule, Pythagoras. Nothing else.
  • Each step tells you what to do and why, so you are never just copying.
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Prepared by Sumeet Sahu · 8103405051
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