| 1. | We can infer the proof from existence of isogonal conjugate too.
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| 2. | The isogonal conjugate of the circumcircle is the line at infinity.
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| 3. | It is the isogonal conjugate of the nine-point center.
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| 4. | The isogonal conjugate of the incentre " I " is itself.
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| 5. | The Brocard points are isogonal conjugates of each other.
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| 6. | The isogonal conjugates of the Fermat points are the isodynamic points and vice versa.
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| 7. | *The isogonal conjugate of the orthocenter of a triangle is the circumcenter of the triangle.
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| 8. | Let P and P ` be isogonal conjugates with respect to the incenter I of triangle ABC, and & alpha; a given constant.
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| 9. | As isogonal conjugation is a function, it makes sense to speak of the isogonal conjugate of sets of points, such as lines and circles.
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| 10. | This intersection point, above the incenter, is the isogonal conjugate of P . talk ) 16 : 35, 8 July 2016 ( UTC)
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