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How is each new right angle made in a square root spiral?

Answer and explanation

Correct answer: By drawing a 1-unit perpendicular on the previous hypotenuse

The governing construction is the square-root spiral, also known as the Spiral of Theodorus. After the initial right triangle is made, each new triangle uses the preceding hypotenuse as one side. A segment of exactly 1 unit is drawn perpendicular to that hypotenuse; the new segment and the old hypotenuse then form the two perpendicular sides of the next right triangle. By the Pythagorean theorem, a previous hypotenuse √n produces a new one √(n + 1), since (√n)² + 1² = n + 1. Therefore, option A correctly describes how every new right angle is constructed. The other choices do not follow this geometric rule.

Related tags

Number-SystemsSquare-Root-SpiralRight-AngleGeometric-ConstructionSquare Root SpiralNumber SystemsMathematicsClass 9 Mcq

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