teacher with protractor stand blackboard explain geometry science students isolated white handsome male tutor |
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| navigate by keyword : teacher blackboard geometry protractor school education secondary man board knowledge lesson ruler vector science learning study college class chalk student university classroom studying mature tutor male character wear formal clothes explain people work subject tool exam math mathematics engineering measurement proof figure theorem handsome isolated white background concept cartoon illustration |
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| Teacher with Protractor Stand at Blackboard Explain Geometry Science to Students Isolated on White Background. Handsome Tutor Male Character Wear Formal Clothes. Cartoon People Vector Illustration |
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