ConvexPolygonQ [poly]
gives True if the polygon poly is convex, and False otherwise.
ConvexPolygonQ
ConvexPolygonQ [poly]
gives True if the polygon poly is convex, and False otherwise.
Details
- A polygon is convex if no line segment between two points in the polygon ever goes outside the polygon.
- A convex polygon is visible from all points in the polygon.
Examples
open all close allBasic Examples (2)
Test whether a polygon is convex:
ConvexPolygonQ gives False for non-convex polygons:
Scope (7)
ConvexPolygonQ works on polygons:
Triangle:
Rectangle:
Polygon with holes:
Self-intersecting polygons:
Polygons with disconnected components:
Polygon in :
ConvexPolygonQ works on polygons of geographic entities:
Polygons with GeoPosition :
Polygons with GeoPositionXYZ :
Polygons with GeoPositionENU :
ConvexPolygonQ works on polygons with GeoGridPosition :
Applications (4)
Generate random polygons for testing algorithms and verification of time complexity:
Time complexity for algorithms for convex polygons:
Test whether a polygon is concave:
Attempt to test whether a geometric region is convex:
Polygon classification using machine learning. Train a classifier function on polygon examples:
Use the classifier function to classify new polygons:
A simple polygon:
A star‐shaped polygon:
Properties & Relations (6)
A convex polygon is simple:
The OuterPolygon of a convex polygon is convex:
Convex polygons do not have inner polygons:
A convex polygon has all interior vertex angles less than :
Use PolygonDecomposition to decompose a polygon into convex polygons:
Use RandomPolygon to generate a convex polygon:
The convex polygon is the convex hull of its edges:
Possible Issues (1)
For a nonconstant polygon, ConvexPolygonQ returns False :
Related Guides
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▪
- Polygons
History
Text
Wolfram Research (2019), ConvexPolygonQ, Wolfram Language function, https://reference.wolfram.com/language/ref/ConvexPolygonQ.html.
CMS
Wolfram Language. 2019. "ConvexPolygonQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ConvexPolygonQ.html.
APA
Wolfram Language. (2019). ConvexPolygonQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ConvexPolygonQ.html
BibTeX
@misc{reference.wolfram_2025_convexpolygonq, author="Wolfram Research", title="{ConvexPolygonQ}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/ConvexPolygonQ.html}", note=[Accessed: 08-January-2026]}
BibLaTeX
@online{reference.wolfram_2025_convexpolygonq, organization={Wolfram Research}, title={ConvexPolygonQ}, year={2019}, url={https://reference.wolfram.com/language/ref/ConvexPolygonQ.html}, note=[Accessed: 08-January-2026]}