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### Course: 7th grade foundations (Eureka Math/EngageNY)>Unit 6

Lesson 1: Topic A: Foundations

# Decomposing angles

Lindsay finds the measures of angles using addition.

## Want to join the conversation?

• What does decomposing mean?
• Decomposing means breaking things into smaller parts to understand it better.
• how do you correctly do the angles? Like it could be mistaken for CAE or something like that. Does it matter?
• Yes, it does as you go in order to find the angles when solving. It is possible either way but it is easier in order.
• what does decomposing mean?
• Hey kimchhay te

composing means putting together and the prefix de means not so decomposing means taking something apart

hope this helped!
• There is a point where the video dosent explain the work, for example it says what is the measurement of y. Hint z is a straight angle it dosent explain how in the videos to solve that
• how did she add the angles?
• it is kind of like addition and subtraction except you have to do one step and there is degrees.
• help! I do not understand
• Hi Imorris!
This video is a little tricky, but let's work through it step by step.
Let's find angle EAC.
Decomposing means breaking things down.
So to find angle EAC, we would usually need a protractor (which is a handy angle-finding tool) but if you do not have one, there is an easy way to do this. Angle EAD = 60 degrees. Angle DAC = 75 degrees. Angle EAC is the combine measurement of these two angles. What is 60 degrees plus 75 degrees? 135 degrees. 135 is the combined measurement of the two smaller angles making up EAC. This is how we can solve for EAC.
I hope this helps!
(1 vote)
• what does protracter mean and angle
• A protractor is a device or tool to help measure angles or make angles in degrees.An angle is when 2 lines meet at a certain point in degrees.
(1 vote)
• is there more videos to make this understand more?