Using a protractor. Measuring and drawing angles

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  • 1. USING A PROTRACTOR

2. MEASURING ANGLES Set the protractor so that: 1.The vertex of the angle match the protractor centre. 2.One angle arm should match the base line. 3.Read the score, this is the angle measure. 3. DRAWING ANGLES 1. Draw a straight line (using a ruler) starting from an A point. 2. Match the protractor centre with the A point 3. Look for the measure (angle degrees) in the protractor score and mark it as point B. 4. Draw a straight line matching the two points (A--B)