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How to construct a 30-60-90 triangle with compass and straightedge or ruler - Math Open Reference

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How to construct a 30 degree angle with compass and straightedge or ruler - Math Open Reference

Construct angles of 30 45 60 90 120 degrees with Compass

How to Construct a 30 Degrees Angle Using Compass and Straightedge

dec 18th math

Using a compass to construct 60 30 and 90 degrees