check if the other two points exist
if ( i != j and ( points [ i ] [ 0 ] - points [ j ] [ 0 ] ) == ( points [ i ] [ 1 ] - points [ j ] [ 1 ] ) ) : NEW_LINE INDENT if ( m [ ( points [ i ] [ 0 ] , points [ j ] [ 1 ] ) ] > 0 and m [ ( points [ j ] [ 0 ] , points [ i ] [ 1 ] ) ] > 0 ) : NEW_LINE DEDENT