Perpendicular gives correct view on the day (5-6)

I believe the answer is:

right-angled

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'perpendicular' is the definition.
(thesaurus)

'correct view on the day' is the wordplay.
'correct' becomes 'right' (right can mean correct).
'view on' becomes 'angle' (angle is a kind of view. I am not sure about the 'on' bit.).
'the day' becomes 'd' (abbreviation for day).
'right'+'angle'+'d'='RIGHT-ANGLED'

'gives' is the link.

Can you help me to learn more?

(Another definition for right-angled that I've seen is " At ninety degrees".)

I've seen this clue in The Mirror.

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