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Mathematics
Problem
If
1
+
2
i
1+2i
1
+
2
i
,
−
2
+
3
i
-2+3i
−
2
+
3
i
,
−
3
−
4
i
-3-4i
−
3
−
4
i
are vertices of a triangle, then its area is- (1) 11 (2) 22 (3) 16 (4) 30
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