Measuring Angles in Standard Position on the Coordinate Plane

This video tutorial explains how to measure angles in standard position on a coordinate plane. It covers the basics of the coordinate plane, measuring angles with a protractor, and introduces the concept of co-terminal angles. The tutorial demonstrates how angles can be measured in both degrees and radians, and how to find co-terminal angles by adding or subtracting full circles. It also addresses common misunderstandings about where to begin measuring angles.

What is the coordinate plane formed by?

• Two parallel lines

• An x-axis and a y-axis

• A single horizontal line

• A circle

In standard position, where is the vertex of an angle placed?

• On the y-axis

• At the origin

• On the terminal ray

• On the negative x-axis

How can you find co-terminal angles?

• By adding or subtracting 180 degrees

• By adding or subtracting 90 degrees

• By adding or subtracting full circles

• By adding or subtracting 45 degrees

What happens to the angle measure when the terminal ray moves clockwise?

• It becomes larger

• It remains the same

• It becomes negative

• It becomes positive

In radian measure, what is added when you go past one full circle?

• 4 pi

• 2 pi

• Pi

• 3 pi

What is a common mistake students make when measuring angles?

• All of the above

• Starting from the negative x-axis

• Starting from the terminal ray

• Starting from the y-axis

Where should you always begin measuring an angle?

• On the positive y-axis

• On the terminal ray

• On the positive x-axis

• On the negative x-axis