Metamath Proof Explorer


Theorem zerocgra

Description: Zero angles are congruent. Zero angles, that is, angles of degree zero, can be expressed by stating that points A and C are on the same ray starting at B , that is, A ( KB ) C . See also flatcgra . (Contributed by Thierry Arnoux, 23-Aug-2026)

Ref Expression
Hypotheses zerocgra.p 𝑃 = ( Base ‘ 𝐺 )
zerocgra.a = ( cgrA ‘ 𝐺 )
zerocgra.k 𝐾 = ( hlG ‘ 𝐺 )
zerocgra.g ( 𝜑𝐺 ∈ TarskiG )
zerocgra.1 ( 𝜑𝐴 ( 𝐾𝐵 ) 𝐶 )
zerocgra.2 ( 𝜑𝐷 ( 𝐾𝐸 ) 𝐹 )
zerocgra.b ( 𝜑𝐵𝑃 )
zerocgra.e ( 𝜑𝐸𝑃 )
Assertion zerocgra ( 𝜑 → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )

Proof

Step Hyp Ref Expression
1 zerocgra.p 𝑃 = ( Base ‘ 𝐺 )
2 zerocgra.a = ( cgrA ‘ 𝐺 )
3 zerocgra.k 𝐾 = ( hlG ‘ 𝐺 )
4 zerocgra.g ( 𝜑𝐺 ∈ TarskiG )
5 zerocgra.1 ( 𝜑𝐴 ( 𝐾𝐵 ) 𝐶 )
6 zerocgra.2 ( 𝜑𝐷 ( 𝐾𝐸 ) 𝐹 )
7 zerocgra.b ( 𝜑𝐵𝑃 )
8 zerocgra.e ( 𝜑𝐸𝑃 )
9 2 eqcomi ( cgrA ‘ 𝐺 ) =
10 9 a1i ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( cgrA ‘ 𝐺 ) = )
11 eqid ( Itv ‘ 𝐺 ) = ( Itv ‘ 𝐺 )
12 4 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐺 ∈ TarskiG )
13 1 11 3 4 7 5 hlgrcl1 ( 𝜑𝐴𝑃 )
14 13 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐴𝑃 )
15 7 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐵𝑃 )
16 1 11 3 4 7 5 hlgrcl2 ( 𝜑𝐶𝑃 )
17 16 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐶𝑃 )
18 1 11 3 4 8 6 hlgrcl1 ( 𝜑𝐷𝑃 )
19 18 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐷𝑃 )
20 8 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐸𝑃 )
21 1 11 3 4 8 6 hlgrcl2 ( 𝜑𝐹𝑃 )
22 21 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐹𝑃 )
23 simp-6r ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑑𝑃 )
24 simpllr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑓𝑃 )
25 eqid ( dist ‘ 𝐺 ) = ( dist ‘ 𝐺 )
26 eqid ( cgrG ‘ 𝐺 ) = ( cgrG ‘ 𝐺 )
27 simp-4r ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) )
28 27 eqcomd ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) = ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) )
29 1 25 11 12 15 14 20 23 28 tgcgrcomlr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐴 ( dist ‘ 𝐺 ) 𝐵 ) = ( 𝑑 ( dist ‘ 𝐺 ) 𝐸 ) )
30 simpr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) )
31 30 eqcomd ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) = ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) )
32 5 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐴 ( 𝐾𝐵 ) 𝐶 )
33 simp-5r ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑑 ( 𝐾𝐸 ) 𝐷 )
34 simplr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑓 ( 𝐾𝐸 ) 𝐹 )
35 6 ad6antr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐷 ( 𝐾𝐸 ) 𝐹 )
36 1 11 3 19 22 20 12 35 hlcomd ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐹 ( 𝐾𝐸 ) 𝐷 )
37 1 11 3 24 22 19 12 20 34 36 hltr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑓 ( 𝐾𝐸 ) 𝐷 )
38 1 11 3 24 19 20 12 37 hlcomd ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝐷 ( 𝐾𝐸 ) 𝑓 )
39 1 11 3 23 19 24 12 20 33 38 hltr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → 𝑑 ( 𝐾𝐸 ) 𝑓 )
40 1 25 3 12 15 20 32 39 31 28 tghlsub ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ( 𝐶 ( dist ‘ 𝐺 ) 𝐴 ) = ( 𝑓 ( dist ‘ 𝐺 ) 𝑑 ) )
41 1 25 26 12 14 15 17 23 20 24 29 31 40 trgcgr ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ( cgrG ‘ 𝐺 ) ⟨“ 𝑑 𝐸 𝑓 ”⟩ )
42 1 11 3 12 14 15 17 19 20 22 23 24 41 33 34 iscgrad ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ( cgrA ‘ 𝐺 ) ⟨“ 𝐷 𝐸 𝐹 ”⟩ )
43 10 42 breqdi ( ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ 𝑓 ( 𝐾𝐸 ) 𝐹 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )
44 43 anasss ( ( ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ∧ 𝑓𝑃 ) ∧ ( 𝑓 ( 𝐾𝐸 ) 𝐹 ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )
45 1 11 3 18 21 8 4 6 hlne2 ( 𝜑𝐹𝐸 )
46 1 11 3 13 16 7 4 5 hlne2 ( 𝜑𝐶𝐵 )
47 46 necomd ( 𝜑𝐵𝐶 )
48 1 11 3 8 7 16 4 21 25 45 47 hlcgrex ( 𝜑 → ∃ 𝑓𝑃 ( 𝑓 ( 𝐾𝐸 ) 𝐹 ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) )
49 48 ad3antrrr ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) → ∃ 𝑓𝑃 ( 𝑓 ( 𝐾𝐸 ) 𝐹 ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑓 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐶 ) ) )
50 44 49 r19.29a ( ( ( ( 𝜑𝑑𝑃 ) ∧ 𝑑 ( 𝐾𝐸 ) 𝐷 ) ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )
51 50 anasss ( ( ( 𝜑𝑑𝑃 ) ∧ ( 𝑑 ( 𝐾𝐸 ) 𝐷 ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) ) → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )
52 1 11 3 18 21 8 4 6 hlne1 ( 𝜑𝐷𝐸 )
53 1 11 3 13 16 7 4 5 hlne1 ( 𝜑𝐴𝐵 )
54 53 necomd ( 𝜑𝐵𝐴 )
55 1 11 3 8 7 13 4 18 25 52 54 hlcgrex ( 𝜑 → ∃ 𝑑𝑃 ( 𝑑 ( 𝐾𝐸 ) 𝐷 ∧ ( 𝐸 ( dist ‘ 𝐺 ) 𝑑 ) = ( 𝐵 ( dist ‘ 𝐺 ) 𝐴 ) ) )
56 51 55 r19.29a ( 𝜑 → ⟨“ 𝐴 𝐵 𝐶 ”⟩ ⟨“ 𝐷 𝐸 𝐹 ”⟩ )