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Mathematics
Mathematics
Problem
Points
A
(
1
,
1
,
1
)
A(1,1,1)
A
(
1
,
1
,
1
)
,
B
(
4
,
3
,
2
)
B(4,3,2)
B
(
4
,
3
,
2
)
and
C
(
2
,
5
,
5
)
C(2,5,5)
C
(
2
,
5
,
5
)
are the vertices of a triangle. The measure of
∠
A
B
C
\angle ABC
∠
A
B
C
(to the nearest whole number) is a)
86
∘
86^\circ
8
6
∘
b)
94
∘
94^\circ
9
4
∘
c)
79
∘
79^\circ
7
9
∘
d)
97
∘
97^\circ
9
7
∘
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