It is the point where the diagonals cross.
yes the centroid of the rectangle coincide with the intersection of the diagonals with the center of mass
Yes
Yes
It is the point where the diagonals cross.
Only if the lamina is the same shape as the rectangle!
In two dimensions, I believe that it is the centroid of the rectange. In 3D, it would be an infinite line drawn normal to the surface of the rectangle, and passing through its centroid. I suppose that a circle of infinite radius also counts as an answer, because each point is equally (infinitely) far from each vertice, but I do not think that is what the quesion is asking.
In a rectangle, the center of gravity lies at the intersection of its diagonals. This point is referred to as the centroid and is equally distant from all four sides of the rectangle.
# First find the circumcenter & centroid. # subtract centroid from circumcenter.
the centroid is the intersection of medians
The centroid of a triangle is where the median of each side meet.
The centroid is where all the medians in a triangle meet.
2/3 of the median is between the centroid and the vertex, 1/3 between the centroid and the side.