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Mathematics
Mathematics
Problem
Quadrilateral
L
M
N
O
LMNO
L
M
N
O
has
L
M
∥
N
O
LM \parallel NO
L
M
∥
N
O
and
L
M
=
N
O
LM = NO
L
M
=
N
O
. Which one of the following statements is necessarily correct? a)
L
M
=
M
N
LM = MN
L
M
=
M
N
b) Diagonals
L
N
LN
L
N
and
M
O
MO
M
O
are equal c)
L
M
N
O
LMNO
L
M
N
O
is a parallelogram d) Adjacent angles at
M
M
M
and
N
N
N
are right angles
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