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Which tool is useful to place the length obtained from a square root spiral on the number line?

Answer and explanation

Correct answer: Compass

In a square root spiral, the obtained hypotenuse represents a square-root length. This length is taken in a compass and transferred from 0 onto the number line by drawing an arc. A ruler helps draw or measure lines, but a compass is the appropriate instrument for transferring an exact length. Exam tip: use a compass whenever a construction asks you to transfer a length.

Related tags

Square Root SpiralNumber LineCompassGeometrical ConstructionIrrational NumbersNumber SystemsMathematicsClass 9 Mcq

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