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Mathematics
Mathematics
Problem
Lines
p
p
p
and
q
q
q
are parallel. Line
a
a
a
meets
p
p
p
at point
M
M
M
and line
b
b
b
meets
q
q
q
at point
N
N
N
. If
∠
a
M
p
=
∠
b
N
q
\angle aMp = \angle bNq
∠
a
M
p
=
∠
b
N
q
, prove that
a
∥
b
a \parallel b
a
∥
b
.
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