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I need to know the answer to this problem

I need to know the answer to this problem-example-1
User Srilakshmi
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1 Answer

3 votes
The interior angles of a triangle will always add to equal 180. Knowing that, we can set up an equation to find x:

6x + 12 + 4x + 4x = 180
14x + 12 = 180
4x = 168
x = 12

If you need to, you can plug 12 into 2x + 18 for x to find the side length.

Hope this helps.
User Timitry
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