https://en.wikipedia.org/wiki/Straightedge_and_compass_construction
https://en.wikipedia.org/wiki/Constructible_polygon
Adjacent-numbered pages: BP1132 BP1133 BP1134 BP1135 BP1136  *  BP1138 BP1139 BP1140 BP1141 BP1142
stub, precise, math, hardsort, proofsrequired, preciseworld
Jago Collins