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In a square root spiral, how long is the new perpendicular side usually kept in each new triangle?

Answer and explanation

Correct answer: 1

In a square root spiral, each new right triangle uses the hypotenuse of the previous triangle as one side, and its new perpendicular side is kept 1 unit long. By Pythagoras’ theorem, the successive hypotenuses become \(\sqrt{2}, \sqrt{3}, \sqrt{4}\), and so on. \(\sqrt{2}\) is not the new perpendicular side; it is the hypotenuse of the first new triangle. Exam tip: remember that the side kept constant at every step is 1 unit.

Related tags

Number SystemsSquare Root SpiralPythagoras TheoremRight TrianglesIrrational NumbersMathematicsClass 9 Mcq

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