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Question: Maple reports FindAngle between 2 lines greater than Pi/2

Question:Maple reports FindAngle between 2 lines greater than Pi/2

Alain83 15 Maple 2019
angle geometry
April 16 2020
3

I'm using Maple2019.

Here is my code:

with(geometry);
point(o, 0, 0);
point(A, 0, 1);
point(d, 0, 2);
point(F, 0.8944271920, 1.4472135960);
line(lOD, [o, d]);
line(lAF, [A, F]);
alpha := FindAngle(lOD, lAF);
 =
                      alpha := 2.034443936


FindAngle is supposed to return the smaller angle between two lines.

Here it is greater than Pi/2

How can that be ?

Thank you for your advice
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