Crossword Genius

Something in Tinder pictures is not quite right? (5,5)

Ross

I believe the answer is:

acute angle

I'm a little stuck... Click here to teach me more about this clue!

'something in tinder pictures' is the definition.
I can't judge whether this definition defines the answer.

'not quite right?' is the wordplay.
I cannot really see how this works, but
'not quite right?' could be 'acute' (I've seen this in another clue) and 'acute' is found in the answer.
The remaining letters 'angle' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

'is' is the link.

Can you help me to learn more?

(Other definitions for acute angle that I've seen before include "Meeting point" , "That can't be right - it's smaller" , "That's not right" , "tighter corner" .)

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