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If you do not have an instrument to measure angles, what are the most useful tools with which to draw a right angle?

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If you do not have an instrument to measure angles, what are the most useful tools with which to draw a right angle?
posted Jun 30, 2022 by Pankaj Deshmukh

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1 Answer

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Compasses and straight edge
A protractor is already an instrument to measure angles. An opisometer is an instrument for measuring the lengths of arbitrary curved lines.

answer Jul 1, 2022 by Varuna Magar
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