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How would I do this? What would it be?

How would I do this? What would it be?-example-1
User Xymostech
by
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1 Answer

4 votes

Answer:
x=80

Explanation:

By definition, the sum of the exterior angles of a polygon is 360 degrees.

Knowing this, you can write the following equation:


(x+8)+(2x+12)+(x+20)=360

Then, you must solve for "x" in order to find its value. To do it, you can follow these steps:

1. You need to add the like terms:


(x+8)+(2x+12)+(x+20)=360\\\\4x+40=360

2. Now, subtract 40 from both sides of the equation:


4x+40-(40)=360-(40)\\\\4x=320

3. Finally, you must divide both sides of the equation by 4. Then:


(4x)/(4)=(320)/(4)\\\\x=80

User MattMS
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7.1k points