Measuring an Angle by a Protractor

Draw a triangle ABC, measure its angles using a protractor and write their sum.

Find the measure of the angle shown in given figure. First estimate through observation and then find the actual measure with the help of protractor.

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Find the measure of the angle shown in given figure. First estimate through observation and then find the actual measure with the help of protractor.

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Find the measure of the angle shown in the given figure. First estimate through observation and then find the actual measure with the help of protractor.

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Find the measure of the angle shown in the given figure. First estimate through observation and then find the actual measure with the help of protractor.

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Draw $\angle \mathrm{AOB}$ and take a ray $OC$ in such a way that ray $OC$ lies between rays $OA$ and $OB$. Now using a protractor verify that $\angle \mathrm{AOB}=\angle \mathrm{AOC}+\angle \mathrm{COB}$.