(a) Quoin
(b) Jamb
(c) Squint
(d) Closer
Ans :- (a) Quoin
Explanation :-
The external corner or angle of a wall surface is called quion.
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(a) Quoin
(b) Jamb
(c) Squint
(d) Closer
Ans :- (a) Quoin
Explanation :-
The external corner or angle of a wall surface is called quion.