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TEK IMAGE / SCIENCE PHOTO LIBRARY TEK IMAGE / SCIENCE PHOTO LIBRARY
Mathematics equipment. Protractor (left), a pair of compasses and pencil (centre top), a pen (right) and an electronic calculator (lower centre). A protractor is used to measure angles, it has a ruler at its base, with graduated markings to measure distances. A pair of compasses is used to draw circles. Electronic calculators are used to carry out complex calculations quickly.
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