Quote:
tangent
/ˈtan(d)ʒ(ə)nt/
noun
a straight line or plane that touches a curve or curved surface at a point, but if extended does not cross it at that point.
- Oxford
We've already seen other people here changing the definitions of words when it didn't suit them, but I didn't expect you to start doing so.
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I blame Euclid.
I can cherry-pick definitions too, Oxford is correct only for a subset of 'curved'. Arcs rather than Bezier curves. How is your tangent measured? Rise over run? That's a tangent not an angle.
...that's not normal. 
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.Because much of what is in the published literature is nonsense,
and much of what isn’t nonsense is not in the scientific literature.
-- Sabine Hossenfelder
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