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Omni-MATH / Let B and C be two fixed points in the plane. For each point A of the plane, outside of the line BC, let G be the barycenter of the triangle ABC. Determine the locus of points A su…

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problem

Let BB and CC be two fixed points in the plane. For each point AA of the plane, outside of the line BCBC, let GG be the barycenter of the triangle ABCABC. Determine the locus of points AA such that ∠BAC+∠BGC=180∘\angle BAC + \angle BGC = 180^{\circ}. Note: The locus is the set of all points of the plane that satisfies the property.
Plain-text mathematical notation (without MathML)
Let B and C be two fixed points in the plane. For each point A of the plane, outside of the line BC, let G be the barycenter of the triangle ABC. Determine the locus of points A such that ∠BAC+∠BGC=180^(∘).

Note: The locus is the set of all points of the plane that satisfies the property.
Original LaTeX notation
Let $B$ and $C$ be two fixed points in the plane. For each point $A$ of the plane, outside of the line $BC$, let $G$ be the barycenter of the triangle $ABC$. Determine the locus of points $A$ such that $\angle BAC + \angle BGC = 180^{\circ}$.

Note: The locus is the set of all points of the plane that satisfies the property.

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