How to determine whether a point (X,Y) is contained within an arc section of a circle (i.e. a Pie slice)?

Question

Imagine a circle. Imagine a pie. Imagine trying to return a bool that determines whether the provided parameters of X, Y are contained within one of those pie pieces.

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Answer 1

Check:

1. The angle from the centerX,centerY through X,Y should be between start&endangle.
2. The distance from centerX,centerY to X,Y should be less then the Radius

And you'll have your answer.