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Help with Similarity Triangles Geometry. I dont understand how to solve for x on this one.​

Help with Similarity Triangles Geometry. I dont understand how to solve for x on this-example-1
User Trader
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1 Answer

17 votes
17 votes

since we know those two triangles are similar then we can use proportions.


\cfrac{AE}{AB}=\cfrac{AD}{AC}\implies \cfrac{14-8}{2x}=\cfrac{14}{2x+4}\implies \cfrac{6}{2x}=\cfrac{14}{2x+4}\implies \cfrac{3}{x}=\cfrac{14}{2x+4} \\\\\\ 6x+12=14x\implies 12=8x\implies \cfrac{12}{8}=x\implies \cfrac{3}{2}=x \\\\[-0.35em] ~\dotfill\\\\ AB=2x+4\implies AB=2\left( (3)/(2) \right)+4\implies AB=3+4\implies AB=7

User Calvin Park
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