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# Congruent and Similar Triangles

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

**Note:** The above diagram is not drawn to scale.

(a) \(\triangle ABC\) with side lengths \(\lvert{\overline{AB}}\rvert={15}\text{ cm},\) \(\lvert{\overline{AC}}\rvert={12}\text{ cm}\) and \(\angle BAC=60^\circ\)

(b) \(\triangle DEF\) with side lengths \(\lvert{\overline{DE}}\rvert={8}\text{ cm},\) \(\lvert{\overline{DF}}\rvert={10}\text{ cm}\) and \(\angle EDF=80^\circ\)

(c) \(\triangle GHI\) with angles \(\angle GHI=60^\circ\) and \(\angle GIH=80^\circ\)

(d) \(\triangle JKL\) with side lengths \(\lvert{\overline{JK}}\rvert={20}\text{ cm},\) \(\lvert{\overline{KL}}\rvert={18}\text{ cm}\) and \(\lvert{\overline{JL}}\rvert={16}\text{ cm}\)

**Note:** The above diagram is not drawn to scale.

**Note:** The above diagram is not drawn to scale.

**Note:** The above diagram is not drawn to scale.

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