Which of the following statements is/are correct statements?
1. Centroid of a triangle is the point of concurrency of medians
2. Incentre of a triangle is the point of concurrency of perpendicular bisectors of the sides of the triangle
3. Circumcentre of a triangle is the point of concurrency of internal bisectors of the angles of the triangle
4. Orthocentre of a triangle is the point of concurrency of altitudes of the triangle drawn from one vertex to opposite side
5. A triangle can have only one excentre
only 1,4
Centroid G of the triangle ABC, divides the median AD in the ration 2:1 and coordinate of G (Centroid)