Figure reportedly destroyed over viewpoint (9)
I believe the answer is:
rectangle
'figure' is the definition.
(rectangle is a kind of figure)
'reportedly destroyed over viewpoint' is the wordplay.
'reportedly' becomes 'e' (I've seen this in other clues).
'destroyed' becomes 'rct' (I can't justify this - if you can you should believe this answer much more).
'over' indicates putting letters inside.
'viewpoint' becomes 'angle' (angle is a kind of viewpoint).
'e' inserted within 'rct' is 'rect'.
'rect'+'angle'='RECTANGLE'
Can you help me to learn more?
(Other definitions for rectangle that I've seen before include "box" , "Oblong" , "Four-sided figure" , "Figure on plane" , "Shape of football pitch" .)