Adding and subtracting angles

We've decomposed numbers before to make them easier to work with, like how we decompose the number 12 into 10 + 2. That same concept is really helpful when working with angles, too! Especially when there's an unknown angle, we can decompose angles and then use addition or subtraction to solve them. Does that sound confusing? Don't worry, in this video we'll explain it all in detail and you'll be a pro in no time!

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Geometry - 4th grade