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Mathematics
Mathematics
Problem
At the intersection of two lines, four angles
∠
1
,
∠
2
,
∠
3
\angle 1, \angle 2, \angle 3
∠1
,
∠2
,
∠3
and
∠
4
\angle 4
∠4
are formed in order. If
∠
1
=
2
x
+
15
∘
\angle 1 = 2x + 15^{\circ}
∠1
=
2
x
+
1
5
∘
and
∠
2
=
3
x
−
25
∘
\angle 2 = 3x - 25^{\circ}
∠2
=
3
x
−
2
5
∘
, find the measure of
∠
3
\angle 3
∠3
. a)
95
∘
95^{\circ}
9
5
∘
b)
89
∘
89^{\circ}
8
9
∘
c)
91
∘
91^{\circ}
9
1
∘
d)
83
∘
83^{\circ}
8
3
∘
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