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Theorem ragflat 28222

Description: Deduce equality from two right angles. Theorem 8.7 of [Schwabhauser] p. 58. (Contributed by Thierry Arnoux, 3-Sep-2019.)

**Hypotheses**
Ref	Expression
israg.p	⊢ 𝑃 = (Base‘𝐺)
israg.d	⊢ − = (dist‘𝐺)
israg.i	⊢ 𝐼 = (Itv‘𝐺)
israg.l	⊢ 𝐿 = (LineG‘𝐺)
israg.s	⊢ 𝑆 = (pInvG‘𝐺)
israg.g	⊢ (𝜑 → 𝐺 ∈ TarskiG)
israg.a	⊢ (𝜑 → 𝐴 ∈ 𝑃)
israg.b	⊢ (𝜑 → 𝐵 ∈ 𝑃)
israg.c	⊢ (𝜑 → 𝐶 ∈ 𝑃)
ragflat.1	⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ (∟G‘𝐺))
ragflat.2	⊢ (𝜑 → ⟨“𝐴𝐶𝐵”⟩ ∈ (∟G‘𝐺))

**Assertion**
Ref	Expression
ragflat	⊢ (𝜑 → 𝐵 = 𝐶)

**Proof of Theorem ragflat**
Step	Hyp	Ref	Expression
1		simpr 483	. 2 ⊢ ((𝜑 ∧ 𝐵 = 𝐶) → 𝐵 = 𝐶)
2		israg.p	. . 3 ⊢ 𝑃 = (Base‘𝐺)
3		israg.d	. . 3 ⊢ − = (dist‘𝐺)
4		israg.i	. . 3 ⊢ 𝐼 = (Itv‘𝐺)
5		israg.l	. . 3 ⊢ 𝐿 = (LineG‘𝐺)
6		israg.s	. . 3 ⊢ 𝑆 = (pInvG‘𝐺)
7		israg.g	. . . 4 ⊢ (𝜑 → 𝐺 ∈ TarskiG)
8	7	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐺 ∈ TarskiG)
9		israg.a	. . . 4 ⊢ (𝜑 → 𝐴 ∈ 𝑃)
10	9	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐴 ∈ 𝑃)
11		israg.b	. . . 4 ⊢ (𝜑 → 𝐵 ∈ 𝑃)
12	11	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐵 ∈ 𝑃)
13		israg.c	. . . 4 ⊢ (𝜑 → 𝐶 ∈ 𝑃)
14	13	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐶 ∈ 𝑃)
15		eqid 2730	. . . 4 ⊢ (𝑆‘𝐶) = (𝑆‘𝐶)
16	2, 3, 4, 5, 6, 8, 14, 15, 10	mircl 28179	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ((𝑆‘𝐶)‘𝐴) ∈ 𝑃)
17		ragflat.1	. . . 4 ⊢ (𝜑 → ⟨“𝐴𝐵𝐶”⟩ ∈ (∟G‘𝐺))
18	17	adantr 479	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ⟨“𝐴𝐵𝐶”⟩ ∈ (∟G‘𝐺))
19	2, 3, 4, 5, 6, 8, 14, 15, 10	mircgr 28175	. . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (𝐶 − ((𝑆‘𝐶)‘𝐴)) = (𝐶 − 𝐴))
20	2, 3, 4, 8, 14, 16, 14, 10, 19	tgcgrcomlr 27998	. . . . 5 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (((𝑆‘𝐶)‘𝐴) − 𝐶) = (𝐴 − 𝐶))
21	2, 3, 4, 5, 6, 8, 10, 12, 14	israg 28215	. . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (⟨“𝐴𝐵𝐶”⟩ ∈ (∟G‘𝐺) ↔ (𝐴 − 𝐶) = (𝐴 − ((𝑆‘𝐵)‘𝐶))))
22	18, 21	mpbid 231	. . . . 5 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (𝐴 − 𝐶) = (𝐴 − ((𝑆‘𝐵)‘𝐶)))
23		eqid 2730	. . . . . . 7 ⊢ (𝑆‘𝐵) = (𝑆‘𝐵)
24	2, 3, 4, 5, 6, 8, 12, 23, 14	mircl 28179	. . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ((𝑆‘𝐵)‘𝐶) ∈ 𝑃)
25		ragflat.2	. . . . . . . . . 10 ⊢ (𝜑 → ⟨“𝐴𝐶𝐵”⟩ ∈ (∟G‘𝐺))
26	25	adantr 479	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ⟨“𝐴𝐶𝐵”⟩ ∈ (∟G‘𝐺))
27	2, 3, 4, 5, 6, 8, 10, 14, 12, 26	ragcom 28216	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ⟨“𝐵𝐶𝐴”⟩ ∈ (∟G‘𝐺))
28		simpr 483	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐵 ≠ 𝐶)
29	2, 3, 4, 5, 6, 8, 12, 23, 14	mirbtwn 28176	. . . . . . . . . 10 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐵 ∈ (((𝑆‘𝐵)‘𝐶)𝐼𝐶))
30	2, 3, 4, 8, 24, 12, 14, 29	tgbtwncom 28006	. . . . . . . . 9 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐵 ∈ (𝐶𝐼((𝑆‘𝐵)‘𝐶)))
31	2, 5, 4, 8, 14, 24, 12, 30	btwncolg1 28073	. . . . . . . 8 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (𝐵 ∈ (𝐶𝐿((𝑆‘𝐵)‘𝐶)) ∨ 𝐶 = ((𝑆‘𝐵)‘𝐶)))
32	2, 3, 4, 5, 6, 8, 12, 14, 10, 24, 27, 28, 31	ragcol 28217	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ⟨“((𝑆‘𝐵)‘𝐶)𝐶𝐴”⟩ ∈ (∟G‘𝐺))
33	2, 3, 4, 5, 6, 8, 24, 14, 10	israg 28215	. . . . . . 7 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (⟨“((𝑆‘𝐵)‘𝐶)𝐶𝐴”⟩ ∈ (∟G‘𝐺) ↔ (((𝑆‘𝐵)‘𝐶) − 𝐴) = (((𝑆‘𝐵)‘𝐶) − ((𝑆‘𝐶)‘𝐴))))
34	32, 33	mpbid 231	. . . . . 6 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (((𝑆‘𝐵)‘𝐶) − 𝐴) = (((𝑆‘𝐵)‘𝐶) − ((𝑆‘𝐶)‘𝐴)))
35	2, 3, 4, 8, 24, 10, 24, 16, 34	tgcgrcomlr 27998	. . . . 5 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (𝐴 − ((𝑆‘𝐵)‘𝐶)) = (((𝑆‘𝐶)‘𝐴) − ((𝑆‘𝐵)‘𝐶)))
36	20, 22, 35	3eqtrd 2774	. . . 4 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (((𝑆‘𝐶)‘𝐴) − 𝐶) = (((𝑆‘𝐶)‘𝐴) − ((𝑆‘𝐵)‘𝐶)))
37	2, 3, 4, 5, 6, 8, 16, 12, 14	israg 28215	. . . 4 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → (⟨“((𝑆‘𝐶)‘𝐴)𝐵𝐶”⟩ ∈ (∟G‘𝐺) ↔ (((𝑆‘𝐶)‘𝐴) − 𝐶) = (((𝑆‘𝐶)‘𝐴) − ((𝑆‘𝐵)‘𝐶))))
38	36, 37	mpbird 256	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → ⟨“((𝑆‘𝐶)‘𝐴)𝐵𝐶”⟩ ∈ (∟G‘𝐺))
39	2, 3, 4, 5, 6, 8, 14, 15, 10	mirbtwn 28176	. . . 4 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐶 ∈ (((𝑆‘𝐶)‘𝐴)𝐼𝐴))
40	2, 3, 4, 8, 16, 14, 10, 39	tgbtwncom 28006	. . 3 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐶 ∈ (𝐴𝐼((𝑆‘𝐶)‘𝐴)))
41	2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 38, 40	ragflat2 28221	. 2 ⊢ ((𝜑 ∧ 𝐵 ≠ 𝐶) → 𝐵 = 𝐶)
42	1, 41	pm2.61dane 3027	1 ⊢ (𝜑 → 𝐵 = 𝐶)

Colors of variables: wff setvar class

Syntax hints: → wi 4 ∧ wa 394 = wceq 1539 ∈ wcel 2104 ≠ wne 2938 ‘cfv 6542 (class class class)co 7411 ⟨“cs3 14797 Basecbs 17148 distcds 17210 TarskiGcstrkg 27945 Itvcitv 27951 LineGclng 27952 pInvGcmir 28170 ∟Gcrag 28211

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-rep 5284 ax-sep 5298 ax-nul 5305 ax-pow 5362 ax-pr 5426 ax-un 7727 ax-cnex 11168 ax-resscn 11169 ax-1cn 11170 ax-icn 11171 ax-addcl 11172 ax-addrcl 11173 ax-mulcl 11174 ax-mulrcl 11175 ax-mulcom 11176 ax-addass 11177 ax-mulass 11178 ax-distr 11179 ax-i2m1 11180 ax-1ne0 11181 ax-1rid 11182 ax-rnegex 11183 ax-rrecex 11184 ax-cnre 11185 ax-pre-lttri 11186 ax-pre-lttrn 11187 ax-pre-ltadd 11188 ax-pre-mulgt0 11189

This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-nel 3045 df-ral 3060 df-rex 3069 df-rmo 3374 df-reu 3375 df-rab 3431 df-v 3474 df-sbc 3777 df-csb 3893 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-tp 4632 df-op 4634 df-uni 4908 df-int 4950 df-iun 4998 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-pred 6299 df-ord 6366 df-on 6367 df-lim 6368 df-suc 6369 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-f1 6547 df-fo 6548 df-f1o 6549 df-fv 6550 df-riota 7367 df-ov 7414 df-oprab 7415 df-mpo 7416 df-om 7858 df-1st 7977 df-2nd 7978 df-frecs 8268 df-wrecs 8299 df-recs 8373 df-rdg 8412 df-1o 8468 df-oadd 8472 df-er 8705 df-map 8824 df-pm 8825 df-en 8942 df-dom 8943 df-sdom 8944 df-fin 8945 df-dju 9898 df-card 9936 df-pnf 11254 df-mnf 11255 df-xr 11256 df-ltxr 11257 df-le 11258 df-sub 11450 df-neg 11451 df-nn 12217 df-2 12279 df-3 12280 df-n0 12477 df-xnn0 12549 df-z 12563 df-uz 12827 df-fz 13489 df-fzo 13632 df-hash 14295 df-word 14469 df-concat 14525 df-s1 14550 df-s2 14803 df-s3 14804 df-trkgc 27966 df-trkgb 27967 df-trkgcb 27968 df-trkg 27971 df-cgrg 28029 df-mir 28171 df-rag 28212

This theorem is referenced by: ragtriva 28223 footexALT 28236 footexlem2 28238 foot 28240

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