1. Measuring Angles

In the context of angles in standard position, if point C is at $(0,0)$, point O is at $(1,0)$, and point A is at $(0,1)$, what is the measure of angle COA in degrees?

Which of the following angles are in standard position? Select the correct option.

If $\mathrm{AB}$ and $\mathrm{CD}$ are diameters of circle $t$ that intersect at the center, what is the measure of angle $\angle \mathrm{ACD}$?

If an angle in standard position has its terminal side passing through the point $(0,1)$ on the unit circle, what is its measure in degrees?

If an angle $c$ in standard position has its terminal side passing through the point $(0,1)$ on the unit circle, what is the measure of angle $c$ in degrees?

An angle is in standard position and its terminal side passes through the point $(3,4)$. What is the measure of the angle in degrees, rounded to the nearest whole number?

In standard position, which ray is the terminal side of a $0°$ angle?

A wall is ________ to an adjacent wall when they are perpendicular to each other.

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

If an angle $\mathrm{AOC}$ is in standard position and its terminal side passes through the point $(1,1)$ on the coordinate plane, what is the measure of angle $\mathrm{AOC}$ to the nearest degree?

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

Which of the following angles in standard position is an acute angle?

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

If angles $PTQ$ and $STR$ are vertical angles and congruent, which of the following statements is true about their measures in standard position?

In standard position, if ray $OX$ is the initial side and ray $OZ$ is the terminal side, what is the name of the angle formed by these two rays?