The cis isomer of 1, 1, 3, 5-tetramethylcyclohexane is more stable than the trans of 1, 1, 3, 5-tetramethylcyclohexane. This also implies that former has a higher stability and energy than the later.
The picture attached to this answer sheet is cis isomer of 1, 1, 3, 5-tetramethylcyclohexane
Also even, the cis isomer of 1, 1, 3, 5-tetramethylcyclohexaneexist in two forms
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