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If you want to find similar triangles, use only SSS, SAS and AAA. Don't make an ASS of yourself.

\(\overline{AB} \) is parallel to \(\overline{DE} \), \(AC=5,\) and \(CD=13.\)

If the area of \(\triangle ABC\) is \(11,\) what is the area of \(\triangle CDE\) ?

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In the right triangle above, a height is drawn to the hypotenuse. Find \(x+y+z.\)

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In the above diagram, \(\square ABCD\) is a square with side \(\overline{AD}\) extended to point \(E\), and \(\overline{BE}\) is a straight line. If the length of \(\overline{BC}\) is \(\lvert \overline{BC}\rvert = a=30\) and \(\lvert \overline{CF}\rvert =b= 20,\) what is the area of \(\triangle CEF?\)

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The area of the red triangle is 25 and the area of the orange triangle is 49. What is the area of the trapezium \(ABCD?\)

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The figure shows an isosceles \( \triangle ABC \) with \( AB = BC \). The line \( DE \) cuts \( AC \) extended at \( F \). If \( AD = 5, CE = 3, \) and \( EF = 8, \) find \( DE \).

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