117
(
. 1,2,3).
.1)
=
B =
C =
D =
E =
F =
. 2)
G =
H = M
.
K
. 3)
D = KE =
,
F = G = K
1
2
3
A
B
C
D
F
E
G
H
A G
116
. K
(1)
. (2)
24
30