What is the complete predicate for relaxing is not as easy as it looks.

The complete predicate of the sentence provided is "is not as easy as it looks".

Explanation: The complete predicate of a sentence includes the main verb, which indicates what the subject is, is doing or feeling, and also all the other words that accompany it, that is to say the modifiers. In that way, unlike the simple predicate, the complete predicates contains other elements besides the main verb. In the sentence "Relaxing is not as easy as it looks", the complete predicate is "is not as easy as it looks", which is made up of the main verb "is",  the adverb "not" and the comparative structure "as easy as it looks". The complete predicate is defining and providing additional information about the subject "Relaxing".

either a donut or a sphere or a pancake or a flat sphere. it depends on where the vertical line is.

if the line goes through the center of the circle and is perpendicular to a diameter containing the center, then you get a flat circle.

if the line and the diameter of a the circle meet in the center of the diameter and at an angle, you get a pancake.

if the line is on the circumference of the circle and is at right angles   to the circle you get a ring.

if the line contains the diameter, you get a sphere.

the the line is parallel to the diameter and touches the circumference, you get a donut.