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What is the correct initial sequence of hypotenuses in a square root spiral?

Answer and explanation

Correct answer: √1, √2, √3, √4

The defining sequence is generated by repeatedly adding a perpendicular unit and applying the Pythagorean theorem. If one stage has hypotenuse √n, the next has length √(n + 1). Beginning with the unit length represented as √1, the initial sequence is therefore √1, √2, √3, √4, and it continues in the same increasing pattern. Thus option A is correct. Option B places √2 before √1 and breaks the construction order. Option C increases the radicands by 2, whereas the spiral increases them by 1. Option D reverses the order and does not describe the forward construction. The radical notation also makes the connection with successive square roots visible, even when a term such as √4 can be simplified.

Related tags

Square-Root-SpiralSequenceSuccessive-Square-RootsSquare Root SpiralNumber SystemsMathematicsClass 9 Mcq

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