The Lagrangian is
It has critical points where the first order derivatives vanish:
From the first two equations we get
Then
At these critical points, we have
(maximum)
(minimum)
name two segments parallel to VU.
ST,ZY,WX
NAME TWO SEGMENTS SKEW TO SW VU,ZY,UT,XY
NAME TWO SEGMENTS SKEW TO XY SW,VZ,VS,ST,VU
Answer:
C
Step-by-step explanation: