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SDFSX 2-in-1 Angle Measurement Tool, Digital Protractor, Multifunctional 360 Degrees Inch Metric Scale Rulers,for Woodworking, Carpenter, Construction, DIY Tools - - Amazon.com
Maths Matters - Maths at home idea #5 Make a protractor. Trace a plate or bowl. Fold in quarters for 90°. Fold on eighths for 45°. Return to halves. Fold in thirds
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1 Pcs Aluminum Alloy 360 Degree Angle Ruler Protractor Woodworking Cutting Angle Locator DIY Angle Ruler Goniometer Accurate
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