What's the formula on how to get the coordinates inside of:

a) Square

b) Triangle

c) Circle

d) Oval

I tried the formula here, for triangle, (http://2000clicks.com/mathhelp/GeometryPointAndTriangle3.htm [Broken]) but sometimes even though the point is inside it says it is not.

a) Square

b) Triangle

c) Circle

d) Oval

I tried the formula here, for triangle, (http://2000clicks.com/mathhelp/GeometryPointAndTriangle3.htm [Broken]) but sometimes even though the point is inside it says it is not.

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