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Como medir ângulos usando um transferidor. Matemática com o Sr.
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4th Grade Angles and How to Use a Protractor
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Uma Introdução ao Teorema de Pitágoras | Matemática com o Sr. J
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How to Use a Protractor | Measuring and Drawing Angles with a Protractor | Math with Mr. J
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Angles Song II | How to Measure Angles With A Protractor | Featuring Earl
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How to draw angles using a protractor Class 4, 5
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Measuring and Drawing Angles with a Protractor. Grade 4
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