In the triangle ABC its incircle with center I touches its sides BC,CA and AB in the points A1,B1,C1 respectively. Through I is drawn a line ℓ. The points A′,B′ and C′ are reflections of A1,B1,C1 with respect to the line ℓ. Prove that the lines AA′,BB′ and CC′ intersects at a common point. geometryreflectionincircleconcurrencyconcurrent