Geometry aid (10)
I believe the answer is:
protractor
(Other definitions for protractor that I've seen before include "Geometry set item" , "draughtsman may use this" , "Angle-measuring device" , "muscle" , "Geometrical instrument" .)
I believe the answer is:
protractor
(Other definitions for protractor that I've seen before include "Geometry set item" , "draughtsman may use this" , "Angle-measuring device" , "muscle" , "Geometrical instrument" .)