What is the appropriate usage of "symmetrical" and "symmetric" (using the geometrical adjectival definition of both terms)? Are they synonymous?
A Google Ngram graph of "is symmetric to" (blue line) vs. "is symmetrical to" (red line) vs. "is symmetric with (green line) vs. "is symmetrical with" (yellow line) for the period 1800–2005, with smoothing 3, looks like this. But a check of the actual matches associated with both the "is symmetric with" and "is symmetrical with" lines indicates that they are dominated by matches of the form ...
Portions can be harmonious, balanced, and/or symmetrical but are not required to be, according to how it’s defined. If you draw a potato and it’s taller than a skyscraper, it’s out of proportion. If you draw a potato and there’s a section missing, it’s missing a portion.
138 chamfer /ˈ (t)SHamfər/ verb: in carpentry, cut away (a right-angled edge or corner) to make a symmetrical sloping edge. noun: a symmetrical sloping surface at an edge or corner. – Google If that final form has an edge that is at a 45-degree angle, then it is a chamfered edge.
The correct mathematical term is a palindromic number (or a numerical palindrome). To quote Wikipedia: A palindromic number or numeral palindrome is a number that remains the same when its digits are reversed. Like 16461, for example, it is "symmetrical". The term palindromic is derived from palindrome, which refers to a word (such as rotor or racecar) whose spelling is unchanged when its ...
For example, an ellipses may be symmetrical along the y-axis, whereas a circle would be perfectly symmetrical (about its origin). Describing this outside of math I might say "perfectly symmetrical" to emphasize that it doesn't have any limitations in symmetry, but of course without the limitation, it would imply that and I would only say "The ...