Mathographics by Robert Dixon is a lovely book, containing all sorts of drawings created with compass and straightedge (and some computer stuff at the back)
store.doverpublications.com/04

Everyone knows you can't trisect an arbitrary angle with just a compass.
Underwood Dudley wrote the famous essay "What To Do When The Trisector Comes" to help you fend off those who insist otherwise.
A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.
Use $ and $ for inline LaTeX, and $ and $ for display mode.