Metamath Proof Explorer


Theorem morleylemrneab

Description: Lemma for morley . (Contributed by TA and SS, 4-Jun-2026)

Ref Expression
Hypotheses morley.s ⊢ S = Base G
morley.l ⊢ L = Line 𝒢 ⁡ G
morley.e ⊢ ∼ ˙ = ∼ 𝒢 ∠ ⁡ G
morley.g ⊢ φ → G ∈ 𝒢 Tarski
morley.a ⊢ φ → A ∈ S
morley.b ⊢ φ → B ∈ S
morley.c ⊢ φ → C ∈ S
morley.p ⊢ φ → P ∈ S
morley.q ⊢ φ → Q ∈ S
morley.r ⊢ φ → R ∈ S
morley.0 ⊢ φ → ¬ C ∈ A L B ∨ A = B
morley.1 ⊢ φ → ⟨“ CAQ ”⟩ ∼ ˙ ⟨“ QAR ”⟩
morley.2 ⊢ φ → ⟨“ RAB ”⟩ ∼ ˙ ⟨“ QAR ”⟩
morley.3 ⊢ φ → ⟨“ ABR ”⟩ ∼ ˙ ⟨“ RBP ”⟩
morley.4 ⊢ φ → ⟨“ PBC ”⟩ ∼ ˙ ⟨“ RBP ”⟩
morley.5 ⊢ φ → ⟨“ BCP ”⟩ ∼ ˙ ⟨“ PCQ ”⟩
morley.6 ⊢ φ → ⟨“ QCA ”⟩ ∼ ˙ ⟨“ PCQ ”⟩
Assertion morleylemrneab ⊢ φ → ¬ R ∈ A L B

Proof

Step Hyp Ref Expression
1 morley.s ⊢ S = Base G
2 morley.l ⊢ L = Line 𝒢 ⁡ G
3 morley.e ⊢ ∼ ˙ = ∼ 𝒢 ∠ ⁡ G
4 morley.g ⊢ φ → G ∈ 𝒢 Tarski
5 morley.a ⊢ φ → A ∈ S
6 morley.b ⊢ φ → B ∈ S
7 morley.c ⊢ φ → C ∈ S
8 morley.p ⊢ φ → P ∈ S
9 morley.q ⊢ φ → Q ∈ S
10 morley.r ⊢ φ → R ∈ S
11 morley.0 ⊢ φ → ¬ C ∈ A L B ∨ A = B
12 morley.1 ⊢ φ → ⟨“ CAQ ”⟩ ∼ ˙ ⟨“ QAR ”⟩
13 morley.2 ⊢ φ → ⟨“ RAB ”⟩ ∼ ˙ ⟨“ QAR ”⟩
14 morley.3 ⊢ φ → ⟨“ ABR ”⟩ ∼ ˙ ⟨“ RBP ”⟩
15 morley.4 ⊢ φ → ⟨“ PBC ”⟩ ∼ ˙ ⟨“ RBP ”⟩
16 morley.5 ⊢ φ → ⟨“ BCP ”⟩ ∼ ˙ ⟨“ PCQ ”⟩
17 morley.6 ⊢ φ → ⟨“ QCA ”⟩ ∼ ˙ ⟨“ PCQ ”⟩
18 ioran ⊢ ¬ C ∈ A L B ∨ A = B ↔ ¬ C ∈ A L B ∧ ¬ A = B
19 11 18 sylib ⊢ φ → ¬ C ∈ A L B ∧ ¬ A = B
20 19 simpld ⊢ φ → ¬ C ∈ A L B
21 eqid ⊢ Itv ⁡ G = Itv ⁡ G
22 4 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → G ∈ 𝒢 Tarski
23 5 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → A ∈ S
24 6 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → B ∈ S
25 19 simprd ⊢ φ → ¬ A = B
26 25 adantr ⊢ φ ∧ R ∈ A L B → ¬ A = B
27 26 neqned ⊢ φ ∧ R ∈ A L B → A ≠ B
28 27 adantr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → A ≠ B
29 9 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → Q ∈ S
30 eqid ⊢ hl 𝒢 ⁡ G = hl 𝒢 ⁡ G
31 10 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → R ∈ S
32 13 adantr ⊢ φ ∧ R ∈ A L B → ⟨“ RAB ”⟩ ∼ ˙ ⟨“ QAR ”⟩
33 3 breqi ⊢ ⟨“ RAB ”⟩ ∼ ˙ ⟨“ QAR ”⟩ ↔ ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
34 32 33 sylib ⊢ φ ∧ R ∈ A L B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
35 34 adantr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
36 1 21 30 22 31 23 24 29 23 31 35 cgrane3 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → A ≠ Q
37 36 necomd ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → Q ≠ A
38 1 21 30 22 31 23 24 29 23 31 35 cgrane4 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → A ≠ R
39 simpr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → R ∈ A Itv ⁡ G B
40 1 21 22 31 23 24 29 23 31 35 39 cgranbtwn ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → Q ∈ A Itv ⁡ G R ∨ R ∈ A Itv ⁡ G Q
41 1 21 2 22 23 31 29 38 40 btwnlng13 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → Q ∈ A L R
42 28 necomd ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → B ≠ A
43 1 21 2 22 23 31 24 38 39 btwnlng3 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → B ∈ A L R
44 1 21 2 22 23 31 38 24 42 43 tglineelsb2 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → A L R = A L B
45 41 44 eleqtrd ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → Q ∈ A L B
46 7 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → C ∈ S
47 4 adantr ⊢ φ ∧ R ∈ A L B → G ∈ 𝒢 Tarski
48 7 adantr ⊢ φ ∧ R ∈ A L B → C ∈ S
49 5 adantr ⊢ φ ∧ R ∈ A L B → A ∈ S
50 9 adantr ⊢ φ ∧ R ∈ A L B → Q ∈ S
51 10 adantr ⊢ φ ∧ R ∈ A L B → R ∈ S
52 6 adantr ⊢ φ ∧ R ∈ A L B → B ∈ S
53 12 adantr ⊢ φ ∧ R ∈ A L B → ⟨“ CAQ ”⟩ ∼ ˙ ⟨“ QAR ”⟩
54 3 breqi ⊢ ⟨“ CAQ ”⟩ ∼ ˙ ⟨“ QAR ”⟩ ↔ ⟨“ CAQ ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
55 53 54 sylib ⊢ φ ∧ R ∈ A L B → ⟨“ CAQ ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
56 1 21 47 30 51 49 52 50 49 51 34 cgracom ⊢ φ ∧ R ∈ A L B → ⟨“ QAR ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ RAB ”⟩
57 1 21 47 30 48 49 50 50 49 51 55 51 49 52 56 cgratr ⊢ φ ∧ R ∈ A L B → ⟨“ CAQ ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ RAB ”⟩
58 1 21 47 30 48 49 50 51 49 52 57 cgracom ⊢ φ ∧ R ∈ A L B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ CAQ ”⟩
59 58 adantr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ CAQ ”⟩
60 1 21 22 31 23 24 46 23 29 59 39 cgranbtwn ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → C ∈ A Itv ⁡ G Q ∨ Q ∈ A Itv ⁡ G C
61 1 21 2 22 23 29 46 36 60 btwnlng13 ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → C ∈ A L Q
62 1 21 2 22 23 24 28 29 37 45 46 61 tglineeltr ⊢ φ ∧ R ∈ A L B ∧ R ∈ A Itv ⁡ G B → C ∈ A L B
63 4 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → G ∈ 𝒢 Tarski
64 5 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ∈ S
65 6 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → B ∈ S
66 27 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ≠ B
67 9 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → Q ∈ S
68 1 21 30 47 48 49 50 50 49 51 55 cgrane2 ⊢ φ ∧ R ∈ A L B → A ≠ Q
69 68 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ≠ Q
70 69 necomd ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → Q ≠ A
71 10 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → R ∈ S
72 1 21 30 47 51 49 52 50 49 51 34 cgrane4 ⊢ φ ∧ R ∈ A L B → A ≠ R
73 72 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ≠ R
74 eqid ⊢ dist ⁡ G = dist ⁡ G
75 34 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
76 simpr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ∈ R Itv ⁡ G B
77 1 21 74 63 71 64 65 67 64 71 75 76 cgrabtwn ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ∈ Q Itv ⁡ G R
78 1 21 2 63 64 71 67 73 77 btwnlng2 ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → Q ∈ A L R
79 72 necomd ⊢ φ ∧ R ∈ A L B → R ≠ A
80 simpr ⊢ φ ∧ R ∈ A L B → R ∈ A L B
81 1 21 2 47 49 52 27 51 79 80 tglineelsb2 ⊢ φ ∧ R ∈ A L B → A L B = A L R
82 81 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A L B = A L R
83 78 82 eleqtrrd ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → Q ∈ A L B
84 7 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → C ∈ S
85 58 adantr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ CAQ ”⟩
86 1 21 74 63 71 64 65 84 64 67 85 76 cgrabtwn ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → A ∈ C Itv ⁡ G Q
87 1 21 2 63 64 67 84 69 86 btwnlng2 ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → C ∈ A L Q
88 1 21 2 63 64 65 66 67 70 83 84 87 tglineeltr ⊢ φ ∧ R ∈ A L B ∧ A ∈ R Itv ⁡ G B → C ∈ A L B
89 4 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → G ∈ 𝒢 Tarski
90 5 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → A ∈ S
91 6 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → B ∈ S
92 27 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → A ≠ B
93 9 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → Q ∈ S
94 68 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → A ≠ Q
95 94 necomd ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → Q ≠ A
96 10 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → R ∈ S
97 72 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → A ≠ R
98 92 necomd ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → B ≠ A
99 1 21 89 30 91 90 96 98 97 cgraswap ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → ⟨“ BAR ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ RAB ”⟩
100 34 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
101 1 21 89 30 91 90 96 96 90 91 99 93 90 96 100 cgratr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → ⟨“ BAR ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ QAR ”⟩
102 simpr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → B ∈ A Itv ⁡ G R
103 1 21 89 91 90 96 93 90 96 101 102 cgranbtwn ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → Q ∈ A Itv ⁡ G R ∨ R ∈ A Itv ⁡ G Q
104 1 21 2 89 90 96 93 97 103 btwnlng13 ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → Q ∈ A L R
105 81 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → A L B = A L R
106 104 105 eleqtrrd ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → Q ∈ A L B
107 7 ad2antrr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → C ∈ S
108 58 adantr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → ⟨“ RAB ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ CAQ ”⟩
109 1 21 89 30 91 90 96 96 90 91 99 107 90 93 108 cgratr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → ⟨“ BAR ”⟩ ∼ 𝒢 ∠ ⁡ G ⟨“ CAQ ”⟩
110 1 21 89 91 90 96 107 90 93 109 102 cgranbtwn ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → C ∈ A Itv ⁡ G Q ∨ Q ∈ A Itv ⁡ G C
111 1 21 2 89 90 93 107 94 110 btwnlng13 ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → C ∈ A L Q
112 1 21 2 89 90 91 92 93 95 106 107 111 tglineeltr ⊢ φ ∧ R ∈ A L B ∧ B ∈ A Itv ⁡ G R → C ∈ A L B
113 1 2 21 47 49 52 27 51 tgellng ⊢ φ ∧ R ∈ A L B → R ∈ A L B ↔ R ∈ A Itv ⁡ G B ∨ A ∈ R Itv ⁡ G B ∨ B ∈ A Itv ⁡ G R
114 80 113 mpbid ⊢ φ ∧ R ∈ A L B → R ∈ A Itv ⁡ G B ∨ A ∈ R Itv ⁡ G B ∨ B ∈ A Itv ⁡ G R
115 62 88 112 114 mpjao3dan ⊢ φ ∧ R ∈ A L B → C ∈ A L B
116 20 115 mtand ⊢ φ → ¬ R ∈ A L B