Returns the area of a geodesic polygon defined bypathon Earth.
The “inside” of the polygon is defined as not containing the South pole.
Ifpathis not closed, it is implicitly treated as a closed path nevertheless and the result is
the same.
All coordinates of the path must be valid.
The polygon must be simple (not self-overlapping) and may be concave.
If any segment of the path is a pair of antipodal points, the result is undefined – because two
antipodal points do not form a unique great circle segment on the sphere.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-27 UTC."],[[["\u003cp\u003e\u003ccode\u003eGMSGeometryArea\u003c/code\u003e calculates the area of a geodesic polygon defined by a given path on Earth.\u003c/p\u003e\n"],["\u003cp\u003eThe calculation assumes the polygon's interior excludes the South Pole and treats the path as closed, even if it isn't.\u003c/p\u003e\n"],["\u003cp\u003eFor accurate results, the path must have valid coordinates, be simple (non-self-intersecting), and avoid segments with antipodal points.\u003c/p\u003e\n"]]],["This function, `GMSGeometryArea`, calculates the area of a geodesic polygon on Earth defined by a given path. The polygon's interior is considered to exclude the South Pole. The input path is treated as closed even if it isn't. The polygon must be simple (non-self-intersecting), and all coordinates in the path must be valid. If the path contains antipodal points, the result is undefined. Concave polygons are acceptable.\n"],null,["# GoogleMaps Framework Reference\n\nGMSGeometryArea\n===============\n\n extern double GMSGeometryArea(../Classes/GMSPath.html *_Nonnull path)\n\nReturns the area of a geodesic polygon defined by `path` on Earth.\n\nThe \"inside\" of the polygon is defined as not containing the South pole.\n\nIf `path` is not closed, it is implicitly treated as a closed path nevertheless and the result is\nthe same.\n\nAll coordinates of the path must be valid.\n\nThe polygon must be simple (not self-overlapping) and may be concave.\n\nIf any segment of the path is a pair of antipodal points, the result is undefined -- because two\nantipodal points do not form a unique great circle segment on the sphere."]]
