Viewpoint that may vary to some degree (5)

I believe the answer is:

angle

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'viewpoint' is the definition.
(angle is a kind of viewpoint)

I can't explain the remainder of the clue.

(Other definitions for angle that I've seen before include "Old English settler" , "Standpoint" , "Point of view - fish" , "Point of view - 18 (anag)" , "member of tribe" .)

I've seen this clue in The Globe and Mail.

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