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How do you solve problems to find unknown angles?

How do you solve problems to find unknown angles?

How do you solve problems to find unknown angles?

Intro text:

To solve problems with unknown angles, start by looking at how the angles are related:If an angle is made up of two smaller angles, you can add them to find the total angle.If you know the total angle and one of the smaller angles,you can use subtraction to find the other smaller angle.

Let’s start with an example where you figure out the total angle.This angle is split into two smaller angles.One part measures 30 degrees, and the other part measures 50 degrees.These two angles are right next to each other and form one total angle.To find out how large the total angle is, just add the two smaller angles together.Thirty plus fifty equals eighty.So the total angle is 80 degrees.

Now let’s try an example where one smaller angle is missing.This total angle is also split into two smaller angles.This time, you know that one of the smaller angles measures 35 degrees,and the total angle is 90 degrees.But you don’t know how big the other smaller angle is.To find the missing smaller angle, start with the total angle and subtract the smaller angle you already know.90 degrees minus 35 degrees equals 55 degrees.So the other smaller angle is 55 degrees.

Outro text:

To solve problems with unknown angles, start by looking at how the angles are related:If an angle is made up of two smaller angles, you can add them to find the total angle.If you know the total angle and one of the smaller angles,you can use subtraction to find the other smaller angle.

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