What is a segment with its endpoints on the planes of
the bases that is perpendicular to the planes
of the bases?

Altitude of a Cylinder

Step-by-step explanation:

Altitude of a Cylinder can be seen as a form of segment between the plane of a base to the plane of another base in which the height of the cylinder can be said to also be the length of the altitude meaning both the height and the length of the cylinder can be said to be equal which is why the axis of a cylinder is the segment which contains the centers of the two bases.

ALTITUDE OF A CYLINDER can also be seen as the distance between the bases of a cylinder which is the shortest line segment that occur between the possibly extended bases which is why ALTITUDE OF A BASE is a segment with its endpoints on the planes of

the bases that is perpendicular to the planes

of the bases.