If the smallest angle of rotation for a regular polygon is $18°$, how many sides does the polygon have?

Which of the following is a property of an angle in standard position on the coordinate plane?

If angle $\mathrm{COA}$ is in standard position and its terminal side passes through the point (−$1$, $2$), what is the measure of angle $\mathrm{COA}$ to the nearest degree?

Which of the following is defined using the undefined terms $\mathrm{point}$ and $\mathrm{line}$?

If an angle $r$ is in standard position and its terminal side passes through the point $\left(3,,,4\right)$ in the coordinate plane, what is the measure of angle $r$ to the nearest degree?

If an angle $\mathrm{lkj}$ in standard position has a terminal side that passes through the point $(7,6)$ on the coordinate plane, what is the measure of angle $\mathrm{lkj}$ in degrees, rounded to the nearest whole degree?

If $\angle nlm$ is an angle in standard position whose initial side is along the positive x-axis and whose terminal side passes through the point $(0,1)$, what is the measure of $\angle nlm$ in degrees?

If angle $BAC$ is in standard position and its terminal side passes through the point $(0,1)$ on the unit circle, what is the measure of angle $BAC$ in degrees?

If an angle in standard position measures $45°$, which of the following angles is congruent to it?