|
A |
B |
C |
D |
E | |
|
A |
- |
3 |
6 |
10 |
13 |
|
B |
- |
- |
5 |
9 |
12 |
|
C |
- |
- |
- |
10 |
13 |
|
D |
- |
- |
- |
- |
9 |
|
E |
- |
- |
- |
- |
- |
|
A |
B |
AVE CDE | |
|
A |
- |
3 |
29/3 |
|
B |
- |
- |
26/3 |
|
AVE CDE |
- |
- |
- |
a+b=3 ①
a+m=29/3 ②
b+m=26/3 ③
解，得
a=2
b=1
|
C |
D |
E |
(AB) | |
|
C |
- |
10 |
13 |
11/2 |
|
D |
- |
- |
9 |
19/2 |
|
E |
- |
- |
- |
25/2 |
|
(AB) |
- |
- |
- |
- |
|
（AB） |
C |
AVE DE | |
|
（AB） |
- |
11/2 |
11 |
|
C |
- |
- |
23/2 |
|
AVE DE |
- |
- |
- |
c+f+（a+b）/2=11/2 ①
c+g+(d+e)/2=23/2 ②
f+（a+b）/2+ g+(d+e)/2=11 ③
d+e=9 ④
解，得
c=3
f=1
g=4
d+g+c=10 ①
e+g+c=13 ②
解，得
d=3；e=6
原文：http://www.cnblogs.com/chen-/p/3735692.html