Stage Four: Angle Measurement

Measuring Angles & Angle Measurement Problems

This is one of the tougher concepts to understand when it comes to angles. With angle measurement problems we look at degrees, minutes, and seconds. I had a tough time teaching these problems to my students because it takes some patience to understand them.

A degree is 1/360 of a rotation about a point. They are subdivided into 60 equal parts which are minutes. Each minute is subdivided into 60 parts which are seconds. Thus a measurement of 29 degrees, 47 minutes, 13 seconds is written as:

Here is a video from the Khan Academy explaining angle measurements:

Here is also a video explaining how to add and subtract angle measurements:

And a website:
http://www.algebra.com/algebra/homework/Angles/Angles.faq.question.514507.html

Although these problems are not seen often, it is important for students to understand them so that they can better understand angles. For these it is all about comprehending the formula