Trying to configure three routers using EIGRP

I'm using the GNS3 simulator to configure three routers using EIGRP the simplest way possible.  Router 1 is connected to Router 2 and Router 2 is connected to Router 3.  All three have a loopback address.  The following is what I did to configure each routers.  My configuration isn't working.  What am I doing wrong?  Thank you in advance!

R1:
int g1/0
ip address 192.168.1.1 255.255.255.0
no shutdown
int loopback 0
ip address 10.10.10.1 255.255.255.0
no shutdown
R1(config)#router eigrp 20
R1(config-router)#network 10.0.0.0

R2:
int g1/0
ip address 192.168.1.2 255.255.255.0
no shutdown
ing g2/0
ip address 192.168.2.2 255.255.255.0
no shutdown
int loopback 0
ip address 172.20.100.1 255.255.255.0
no shutdown
R2(config)#router eigrp 20
R2(config-router)#network 172.20.0.0

R3:
int g1/0
ip address 192.168.2.1 255.255.255.0
no shutdown
int loopback 0
ip address 172.16.100.1 255.255.255.0
no shutdown
R3(config)#router eigrp 20
R3(config-router)#network 172.16.0.0
elly960Asked:
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that1guy15Commented:
You are only specifying the networks on the loopbacks for EIGRP. you will also need to add the other directly connected networks

R1:
R1(config)#router eigrp 20
R1(config-router)#network 192.168.1.0

R2:
R2(config)#router eigrp 20
R2(config-router)#network 192.168.1.0
R2(config-router)#network 192.168.2.0


R3(config)#router eigrp 20
R3(config-router)#network 192.168.2.0


Routers 1 and 3 should then see each others routes
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elly960Author Commented:
Thank you!
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