polycleitos
Polyclitus
Polykleitos, in his sculpture of Doryphoros.
It was the first statue to illustrate the contrapposto stance
The Greek sculptor Polykleitos designed Doryphoros(Spear-Bearer),as an example of the "canon" or "rule", showing the perfectly harmonious and balanced proportions of the human body in the sculpted form, about 440 BC.
have been completed
The present perfect tense for "complete" is "has/have completed." For example, "I have completed my homework."
It was completed in six years and was completed in 610 A.D.
It means the last degree program you completed. If you completed only one then you indicate that one. If you completed two, then give the last one you completed.
it was completed
The ABC was completed in fall of 1941. ENIAC was completed in late 1945.
Will have completed is in the future perfect tense, which indicates an action that will be completed before a specific time in the future.