Assertion: ruler | /r/ObjectUse | used in geometry
Facets:
value: for drawing straight lines
type: PURPOSE
Source sentences:
text: In geometry, a ruler without any marks on it (a straightedge) may be used only for drawing straight lines between points.
text: How To Read a Ruler: Ruler is a tool which is used in geometry, sewing, engineering, architect and construction we use ruler for measuring length of things.
text: These rulers are used in various occupations and fields of study, such as geometry, printing, technical drawing, building and engineering.