I believe it was a fly on the ceiling of a bedroom in which Descartes was resting during an illness.
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It is called Cartesian after its inventor, Rene Descartes. It is said that he was lying in bed, ill, and looked up to see an insect on the ceiling. He figured out that the position of the insect could be pinpointed by its distances from two mutually perpendicular edges of the ceiling. And so was born the coordinate plane.
There is no insect with eight feet. An insect has a head, thorax, abdomen, antennae, and six legs. But, if you are asking about a bug with eight legs the correct answer would be a spider or a daddy long legs.
"Fly"
There is no such measure as a centermeter.A centimetre is a measure of distance so a wingspan seems a reasonable option (for an insect).There is no such measure as a centermeter.A centimetre is a measure of distance so a wingspan seems a reasonable option (for an insect).There is no such measure as a centermeter.A centimetre is a measure of distance so a wingspan seems a reasonable option (for an insect).There is no such measure as a centermeter.A centimetre is a measure of distance so a wingspan seems a reasonable option (for an insect).
Any insect