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Find DB.

 

 May 4, 2022
 #1
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Rotate \(\triangle ADC\) so \(AD\) lies on \(DC\) and \(DC\) lies on \(DB\)

 

Because of similar triangles, \(AD:DC = DC: DB = 4:6\)

 

We now have this pair of ratios to solve for: \(4: 6 = 6: \text{__}\)

 

Can you solve it now?

 May 4, 2022

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