Measure each of the following angles with the help of a protractor and write the measure in degrees:

                        

If the measure of $\angle DEF$ is $k°$, then find the value of $k$.

If the measure of $\angle LMN$ is $k°$, then find the value of $k$.

If the measure of $\angle RST$ is $k°$, then find the value of $k$.

Measure each of the following angles with the help of a protractor and write the measure in degrees:

Construct an angle of $25°$ with the help of a protractor.

Construct an angle of $72°$ with the help of a protractor.

Construct an angle of $90°$ with the help of a protractor.

Construct an angle of $117°$ with the help of a protractor.