Unlabeled

The curve of the Gateway Arch in St. Louis, along the middle of its legs

The Gateway Arch is 630 feet tall and 630 feet wide at its base. The curve through the middle of its legs peaks at 625 feet over a ground span of 598 feet.

What does this axis measure?
What does this axis measure?
The curve of the Gateway Arch in St. Louis, along the middle of its legs: 39 points, a line chart.
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Height (feet)
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Distance from the center (feet)
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The data: 39 points
Distance from the center (feet)Height (feet)
−299.220.02
−283.48100.89
−267.73186.92
−251.98260.27
−236.23322.77
−220.48375.99
−204.73421.26
−188.98459.7
−173.23492.29
−157.49519.83
−141.74543.02
−125.99562.43
−110.24578.56
−94.49591.8
−78.74602.49
−62.99610.89
−47.25617.22
−31.5621.63
−15.75624.23
0625.09
15.75624.23
31.5621.63
47.25617.22
62.99610.89
78.74602.49
94.49591.8
110.24578.56
125.99562.43
141.74543.02
157.49519.83
173.23492.29
188.98459.7
204.73421.26
220.48375.99
236.23322.77
251.98260.27
267.73186.92
283.48100.89
299.220.02
Source
Computed: the National Park Service's mathematical equation of the Gateway Arch's centroid curve
Licence
Public domain (U.S. government work); original computation by Unlabeled, nothing copied from the source but the equation's constants
Read
2026-10-23
Drawn
39 points as the puzzle showed them · line
  • Ran in puzzle #36 on November 1, 2026. Play it