Points are given in the plane
How far is the point C away from the line through the points A and B? The result should be accurate.
Calculate the equation of the line of the beam of the center of gravity per side AC of the triangle ABC and the size of the angle at the angle A.
Calculate the vertex D so that the quadrilateral ABCD is a parallelogram.
Calculate the volume of the vortex created by rotating the parallelogram ABCD around the side AB.
and
