Thin and bony (7)
(Other definitions for angular that I've seen before include "Bony - lean - gaunt" , "stiff" , "Having sharp lines and corners" , "Pointed" , "With prominent bone structure" .)
'thin and bony' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for scrawny that I've seen before include "Being underweight" , "Thin -- underfed" , "Skin-and-bones" , "Skinny" , "Meagre" .)