Description: Lemma for btwnconn1 . Now we establish a congruence that will give us D = d when we compute P = Q later on. (Contributed by Scott Fenton, 8-Oct-2013)
Ref | Expression | ||
---|---|---|---|
Assertion | btwnconn1lem10 | |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | simp11 | |
|
2 | simp2r1 | |
|
3 | simp2r3 | |
|
4 | simp2l2 | |
|
5 | simp31 | |
|
6 | simp33 | |
|
7 | simp32 | |
|
8 | simprlr | |
|
9 | 8 | adantl | |
10 | 1 3 4 2 9 | btwncomand | |
11 | simpr3l | |
|
12 | 11 | ad2antll | |
13 | btwnconn1lem8 | |
|
14 | cgrcomlr | |
|
15 | 1 6 5 3 2 14 | syl122anc | |
16 | cgrcom | |
|
17 | 1 5 6 2 3 16 | syl122anc | |
18 | 15 17 | bitrd | |
19 | 18 | adantr | |
20 | 13 19 | mpbid | |
21 | btwnconn1lem9 | |
|
22 | 1 6 7 3 4 21 | cgrcomand | |
23 | 1 2 3 4 5 6 7 10 12 20 22 | cgrextendand | |