尺规作图

• 尸(body lying down; prone body)RADICAL
• 乚(hook; curve)ASSOCIATIVE

A ruler is imagined as a person lying straight with curved fingers marking the length.

• 亻(person; people)RADICAL
• 乍(sudden; just beginning)PHONO-SEMANTIC

A person beginning to do something is the action of making or creating.

• 囗(surround; square frame)RADICAL
• 冬(winter)PHONETIC

A map is a frame enclosing all regions of land, and when read closely sounds like "dong" (winter).