Re: polygonal area on a sphere

Wouldn't that only apply to a plane? For small areas, it likely wouldn't matter much, but ...

Arthur Hass

Sam Wormley wrote:
moltilimits@xxxxxxxxx wrote:
Hi,
please, someone can tell me how can I to calculate the area of a
polygon on the earth's surface where I know the coordinates (lat/lon)
of its points?

Since you know the coordinates of every vertex, break it into
triangles. The area of every triangle is that triangle's base
times its height divided by two. Sum the areas.
.

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