Question
Given: $\overline{\mathrm{AC}} \perp \overline{\mathrm{BC}}$$$\begin{array}{l}\angle \mathrm{C}=(3 \mathrm{x})^{\circ} \\\mathrm{BC}=x+20\end{array}$$$A C=2 x-20$Is $\triangle A B C$ isosceles?(GRAPH CAN'T COPY)
Step 1
This means that $\angle \mathrm{C}$ is a right angle, or 90 degrees. We are also given that $\angle \mathrm{C}=(3 \mathrm{x})^{\circ}$. Show more…
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