Aspects


vs


Concave

Anything related to concave geometric shapes

Convex

Anything related to convex geometric shapes

Others

Quality Example
Simpler

"The check for convex polygons your triangle is simpler than for concave ones see first linked article"

from question "Detecting clicks in a non-rectangular shape"

Hull far more difficult

"But determining a concave hull is far more difficult than a convex hull"

from question "Finding the area of a 2-D data set"

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