1. Measuring Angles

Given a point $(3,4)$ on the terminal side of an angle $\angle$ in standard position, what is the measure of angle $ACB$ in degrees?

Given two intersecting lines in the coordinate plane, which diagram shows angles $1$ and $2$ as vertical angles in standard position?

If an angle $\theta$ is in standard position and $\theta =85°$, in which quadrant does its terminal side lie?

If angle $DEF$ measures $75°$, what is the measure of angle $CFD$ if $CFD$ and $DEF$ are supplementary angles in standard position?

An angle in standard position has its terminal side passing through the point $\left(3,,,4\right)$ in the coordinate plane. Estimate the measure of this angle within $10°$.

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

Which of the following pairs of angles are coterminal angles in standard position?