📘 surveying, geometry

1. **Problem Statement:** (a) Find the value of $x$ given the interior angles of a pentagon: $135^\circ$, $(2x)^\circ$, $(4x)^\circ$, $90^\circ$, and $85^\circ$.

1. **Problem Statement:** You want to plot a polygon step-by-step using bearings and distances, converting bearings to coordinates, checking closure, and calculating area.