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How do I solve this geometry problem?
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How do I solve this geometry problem?

How do I solve this geometry problem?-example-1
User Lukehey
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The interior angles of a triangle must add up to 180 degrees. So


(4x+10)+3x+(4x+5)=11x+15=180\implies11x=165\implies x=15

User Nick Sologoub
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