- Thread starter Cheema
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Look for similar triangles.

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If you can establish that the two smaller triangles are similar then you can see that \(\dfrac{6}{x}=\dfrac{x}{9}\).Can anyone explain this math problem to me? How would I solve for “x”?

View attachment 16630

There is a theorem to that effect:

In any right triangle the altitude from the right angle to the hypotenuse is a mean proportional between the 'parts'.

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