In this exercise we want to use the given diagram to name a point that is collinear with points E and H. For a point to be collinear with two other points, it has to lie on the same line as these two points. Let's consider our diagram.
Note that points E and H are the front, bottom two corners of the cube and are not represented with any dots. For a point to be collinear with E and H, it would have to lie on line EH. Let's highlight EH in the diagram for a visual representation. We will also highlight the points lying on this line.
From the diagram, we can see that point J is the only point, except for points E and H, that lies on line EH. It is, therefore, the only point that is collinear with E and H.
