1. Measuring Angles

Which of the following lines is perpendicular to the horizon in standard position?

If an angle in standard position has its terminal side passing through the point $(-3,4)$, which of the following could be the measure in degrees of the angle's reference angle $m$?

Given that angle $ACB$ is in standard position and its terminal side passes through the point $(3,4)$, what is the measure of angle $ACB$ in degrees?

If an angle in standard position measures $120°$, what is the measure of its minor arc on the unit circle?

An angle is in standard position and its terminal side lies on the negative $y$-axis. What is the measure of this angle in degrees?

If an angle in standard position has its terminal side pointing directly downward along the negative $y$-axis, what is its measure in degrees?

If two diameters of a $\mathrm{circle}$ intersect to form an $\mathrm{angle}$ at the center, what is the measure of the $\mathrm{angle}$ formed between them?

Given that angle $ABC$ is in standard position and its terminal side passes through the point $(12,7)$, which is the best approximation for the measure of angle $ABC$ in degrees?

If an angle in standard position has its terminal side passing through the point on the unit circle corresponding to a rotation of $200°$, what is the measure of the angle in degrees?

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

Given a circle with center O and points E and H on the circumference such that the central angle $\angle EOH$ measures $114°$, what is the measure of arc EH?

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

If angle $\mathrm{MNO}$ measures $112°$, what is the measure of angle $\mathrm{LMN}$?

If an angle in standard position has its terminal side passing through the point $(-3,4)$, what is the measure of the angle in degrees?

If angle $\mathrm{gfd}$ is in standard position and its terminal side lies along the positive $y$-axis, what is its measure?