What types of concurrent constructions are needed to find the centroid of a triangle.

Answer 1

The centroid of a triangle is the intersection (aka point of concurrency) of the 3 medians of the triangle. A median is the line segment from a vertex to the midpoint of the opposite side. So to draw the median, you need to find the midpoint of each side of the triangle. Use the construction method to find a midpoint of a line segment.