Example: The point (5,6) is plotted and the line is measured to be about fifty degrees with the x-axis.

On paper, draw the following angle. If the angle is negative or larger than $360^{\circ }$, convert it to an angle between $0^{\circ }$ and $360^{\circ }$.

20.

$72^{\circ }$

21.

$400^{\circ }$

22.

$-42^{\circ }$

23.

$-395^{\circ }$

On graph paper plot the following points and measure the angle with a protractor.