{
  "name": "Drawn angle, arc and area shares of pie slices in 3D",
  "desc": "One row per view and slice: for a 25% slice at the front, side or back of a pie viewed from 90 down to 10 degrees above, the drawn center angle, its share of 360 degrees, the share of the drawn rim, the share of the top face, and the share of all visible area with a depth of 1/5 of the radius; plus the four Census regions drawn at a 30-degree view with the Northeast in front.",
  "lic": "CC BY 4.0",
  "lic_url": "https://creativecommons.org/licenses/by/4.0/",
  "by": "The Yardstick Almanac",
  "url": "https://theyardstickalmanac.com/reading-charts/pie-chart/",
  "from": [
    "Our own geometry: a pie of radius 1 under parallel projection, viewed from 90, 60, 45, 30, 20 and 10 degrees above, depth 1/5 of the radius",
    "U.S. Census Bureau, Population Division, Vintage 2025 national and state population estimates and components of change (NST-EST2025-ALLDATA.csv, released January 2026, unmodified copy), POPESTIMATE2025 for the four Census regions and the United States"
  ],
  "how": "Compiled by The Yardstick Almanac from the data listed",
  "data_by": [
    "Computed from our own geometry of flat and 3D pies under parallel projection, 2026-11-01, CC BY 4.0"
  ]
}