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While constructing a square-root spiral, which tool is useful for transferring the hypotenuse length to the number line?

Answer and explanation

Correct answer: Compass

The governing geometric idea is transferring a previously constructed length without changing it. A compass is designed for this purpose: its two points can be placed on the endpoints of the hypotenuse, preserving that opening, and an arc can then be drawn from the required point on the number line. The intersection of the arc with the line marks the corresponding irrational length. Therefore, option A, compass, is correct. A balance measures mass, not geometric distance; a clock measures time; and a calculator can evaluate or approximate a number but cannot transfer a segment in a geometric construction. A ruler may help draw or measure, but it is not the listed correct tool for copying the hypotenuse as an arc.

Related tags

Number-SystemsSquare-Root-SpiralGeometric-ConstructionSquare Root SpiralNumber SystemsMathematicsClass 9 Mcq

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