What are terminal and initial sides of an angle?

The video tutorial explains the concept of angle measurement, focusing on the initial and terminal sides. It discusses how angles are measured between two rays and the importance of standard form in determining the starting and ending points of measurement. The tutorial also covers the direction of angles, explaining how positive angles open counterclockwise and negative angles open clockwise. The initial side is always on the X-axis in standard form, while the terminal side varies based on the angle's direction. The video concludes by inviting viewers to leave comments or questions.

What is the purpose of having a standard form in angle measurement?

• To confuse students

• To avoid using a protractor

• To ensure angles are measured from a consistent starting point

• To make angles look more appealing

In standard form, where is the initial side of an angle typically positioned?

• On the Y-axis

• In a vertical position

• On the X-axis or horizontal position

• In a diagonal position

How does a positive angle open in standard form?

• Vertically

• Horizontally

• Counterclockwise

• Clockwise

What determines the terminal side of an angle?

• The length of the initial side

• The direction in which the angle opens

• The color of the angle

• The size of the protractor used

What happens to the terminal side when an angle is negative?

• It disappears

• It remains stationary

• It opens counterclockwise

• It opens clockwise