3. D
X
E
O
A B
C
O
OC
DE
AB
OX

4. 60

5. 90
90

10. 1. http:// th.wikipedia.org/wiki/
2. http:// webindex.sanook.com/
3. http:// www.geocities.com/
4. http:// web.ku.ac.th/schoolnet/
5. http:// vote.sparkit.com