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Mathematics
Mathematics
Problem
If
A
=
(
1
,
2
,
3
)
A = (1, 2, 3)
A
=
(
1
,
2
,
3
)
,
B
=
(
4
,
5
,
6
)
B = (4, 5, 6)
B
=
(
4
,
5
,
6
)
,
C
=
(
7
,
8
,
9
)
C = (7, 8, 9)
C
=
(
7
,
8
,
9
)
and
D
,
E
,
F
D, E, F
D
,
E
,
F
are the mid-points of the triangle
A
B
C
ABC
A
B
C
, then find the centroid of the triangle
D
E
F
DEF
D
E
F
.
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