Lesson: Defining and Measuring Angles

In this lesson, we will learn how to define an angle and how to identify the degree as the unit of angle measurement.

Question Video: Determining the Measure of an Angle Using the Protractor

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Q1:

What is measured using a protractor?

Q2:

Which of the following statements correctly defines an angle?

AAn angle is the figure formed by two rays with a common end point.
BAn angle is the part of a straight line beginning at a given point and extending in one direction to a predetermined length.
CAn angle is the point where two rays intersect.
DAn angle is the part of a straight line beginning at a given point and extending limitlessly in one direction.
EAn angle is the part of a line that connects two points.

Q3:

Which of these is a unit used to measure an angle?

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