Two triangles intersecting in one point, two points, three points, four points, five points, or six points

In your question which ask for the how its possible for the two triangles to intersect in one, two, three, four, five, six points but not seven points. Its because the triangles has only 3 sides which means that the intersection that could from in the two is less than 7 or maximum of 6

The answer is 63.!