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Mathematics
Mathematics
Problem
Line segments
A
B
AB
A
B
and
C
D
CD
C
D
are each
4.2
cm
4.2\,\text{cm}
4.2
cm
long. Segment
E
F
EF
E
F
is equal in length to
C
D
CD
C
D
. Find the length of
E
F
EF
E
F
and list all equalities among
A
B
AB
A
B
,
C
D
CD
C
D
, and
E
F
EF
E
F
.
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