One might be acute or obtuse (5)
I believe the answer is:
angle
(Other definitions for angle that I've seen before include "Old English settler" , "Use a rod and line" , "one of the old people" , "Approach to problem" , "Glean (anag.)" .)
I believe the answer is:
angle
(Other definitions for angle that I've seen before include "Old English settler" , "Use a rod and line" , "one of the old people" , "Approach to problem" , "Glean (anag.)" .)