Angles
Definition
Use properties of parallel lines and special sums of angles to compute unknown angle measures.
Example
In the figure below, lines $m$ and $n$ are parallel, and transversals $q$ and $s$ intersect to form the equilateral triangle $\bigtriangleup BCD$. If $\angle E$ is equal to $\angle C$, what is the value of $x$?
Practice Drill Questions
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