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While constructing a square root spiral, Riya draws a perpendicular segment of length 1 unit at the end of the current hypotenuse in every new step. What is the correct mathematical reason for this?

Answer and explanation

Correct answer: The square of the new hypotenuse becomes 1 greater than the square of the previous hypotenuse.

By Pythagoras’ theorem, \(h_{new}^2=h_{old}^2+1^2\). Hence, each step adds 1 inside the square, producing successive square roots. The 1-unit segment is a leg, not the hypotenuse. Exam tip: identify the perpendicular legs before applying the theorem.

Related tags

Number SystemsSquare Root SpiralPythagoras TheoremIrrational NumbersGeometry ApplicationMathematicsClass 9 Mcq

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