{
 "id": "source/commons-spherical-triangle",
 "class": "source",
 "slug": "commons-spherical-triangle",
 "label": {
  "ar": "كومنز — مثلث كروي قائم",
  "en": "Commons — right spherical triangle",
  "ur": "کومنز — کروی قائم مثلث"
 },
 "summary": {
  "ar": "بيانات رسم حديث وتنازل الملك العام وسلسلة اشتقاقه؛ لا رسم تاريخي لأبي الوفاء.",
  "en": "Modern diagram metadata, PD dedication and derivative chain; not Abu al-Wafa's historical drawing.",
  "ur": "جدید خاکے کی معلومات، عوامی ملکیت اور ماخذی سلسلہ؛ ابو الوفا کا تاریخی نقشہ نہیں۔"
 },
 "stub": false,
 "wings": [],
 "regions": [],
 "periods": [],
 "tags": [],
 "aliases": [],
 "themes": [],
 "data": {
  "kind": "reference_data",
  "type": "article",
  "title": "File:Spherical triangle.svg",
  "publisher": "Wikimedia Commons",
  "issued": {
   "date-parts": [
    [
     2008,
     7,
     14
    ]
   ]
  },
  "language": "en",
  "URL": "https://commons.wikimedia.org/wiki/File:Spherical_triangle.svg",
  "open_access": true,
  "reliability_note": "Actual current PD dedication/history and linked original File:RechtwKugeldreieck.svg description/licence read; original licence also names wfstb, while attribution names Rt66lt PNG traced by Stannered24 April2007. Current Pbrks/Pbroks13 derivative14 July2008. Credit documented chain without assuming all account names are identical.356×358 SVG rendered/fully inspected: A/B/C red vertices, right angle atC, O center, black visible/grey hidden arcs. Greek alpha/beta/gamma label central angles, not the vertex angles used in our modern formula; explain separately. Modern educational image, not primary manuscript.",
  "status": {
   "review": "published",
   "completeness": 2,
   "generated_by": "Copilot SDK in VS Code"
  },
  "provenance": {
   "generated_by": "Copilot SDK in VS Code",
   "model": "unknown",
   "run": "inventions-p3-b34",
   "source": "Actual current/original PD metadata and fully inspected rendered SVG; external files"
  }
 },
 "prose": {},
 "degree": 0,
 "contemporaries": [],
 "updated": "2026-11-06",
 "connections": [],
 "related": [],
 "license": {
  "prose": "CC BY-SA 4.0",
  "data": "CC0 1.0"
 }
}