ستاره
Sign in to savethumb|right|An ornate 18th century iron straightedge A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler.
Wikidata facts
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- Commons category
- Straightedges
- partially coincident with
- ruler
- maintained by WikiProject
- WikiProject Mathematics
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