Clicking the circle to the left of the 3 lines below will add increasing numbers of points on the ellipse.
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Hidden Label: "p" Subscript, 2 , Baseline with "a" equals left bracket, 0 , 0.1...1 , right bracketp2witha=0,0.1...1
Label
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Hidden Label: "p" Subscript, 2 , Baseline with "a" equals left bracket, 0 , 0.0 1...1 , right bracketp2witha=0,0.01...1
Label
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Hidden Label: "p" Subscript, 2 , Baseline with "a" equals left bracket, 0 , 0.0 0 1...1 , right bracketp2witha=0,0.001...1
Label
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Points
Hide this folder from students.
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Moving the red point not on the circumference will allow to to investigate what happens when this focus moves towards the centre or outside of the triangle.