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2007 Harvard-MIT Mathematics Tournament
28
28
Part of
2007 Harvard-MIT Mathematics Tournament
Problems
(1)
2007 Guts #28: Cyclic Hexagon
Source:
6/22/2012
Compute the circumradius of cyclic hexagon
A
B
C
D
E
F
ABCDEF
A
BC
D
EF
, which has side lengths
A
B
=
B
C
=
2
AB=BC=2
A
B
=
BC
=
2
,
C
D
=
D
E
=
9
CD=DE=9
C
D
=
D
E
=
9
, and
E
F
=
F
A
=
12
EF=FA=12
EF
=
F
A
=
12
.
geometry
circumcircle