11/1/2022 0 Comments Paper protractorFor example, if you counted 20° from the dotted line, the reflex angle measures 180 + 20 which is 200°. Place the protractor on the vertex of the base line, and draw a dotted line for 180°.įlip the paper, keep the protractor on the vertex, and measure from the dotted line to the angle line. Paper protractor how to#How to Measure Angles Exceeding 180° Using a Semicircular Protractor Then, flip the paper, and you have your desired angle exceeding 180° without using a circular protractor. So, 260° will be an additional 80° from 0.Īfter you’ve marked the said angle, draw a line connecting the vertex and the marked point. For instance, if you wish to draw an angle measuring 260°, begin counting from 180 to 260. Considering the dotted line as your base line, and 0° as 180°, mark the desired angle. Now flip the paper, and hold the protractor once again on the marked vertex. Once measured, draw a dotted line from the vertex to the marked point. Additionally, we’ll also teach you to draw or measure angles more than 180° using a regular semicircular protractor. Let’s begin with learning to draw an angle using a protractor, and also learn how to measure already drawn angles. However, a semicircular protractor is also capable of measuring angles up to 360°, even though it does not have the respective markings. If semicircular protractors measure angles up to 180°, how much can a circular protractor measure? Simple! 360°. These are mostly semicircular, and can be used to draw or measure angles up to a maximum of 180°. Protractors are widely used in schools to help students learn geometry. The latter are popularly referred to as radian-scale protractors and are used for complex, mechanical figures especially in the field of engineering or architecture. Most protractors measure angles in degrees, whereas a few also measure them in radians.
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