Three legs are more stable than 4 legs.
Humans balance on two legs. This is less stable than balancing on four legs. The more legs you can lean on, the more stable you are. Centipedes are really stable!
Humans balance on two legs. This is less stable than balancing on four legs. The more legs you can lean on, the more stable you are. Centipedes are really stable!
A tripod stand has three legs and is more stable compared to a four-legged stand.
Animals with amputated legs, which leaves them with 3 legs, tend to be more weak than anamals with four legs are
A small seat that has three legs as opposed to four (or more)
It makes the table more stable and even but not all tables have 4 legs some have3 and are just as stable.
On a four legged chair, if any of the legs are not as long (or longer) as the others, the chair will wobble. On a three legged stoll, if one of the legs are different, the chair will only be uneven or fall over (depending on how drastic the difference is).
Because the three feet of the tripod are on the same plane, even if one leg is shorter it will not waver or stumble. However, with four legs, if one leg is shorter it will end up in two planes, or two tripods, and will always waver from one plane to the other, thus making the chair/table unstable. Chairs and tables are probably four legged because they are rectangular. If you want a three legged table you would need to have an extra sphere/block that has three legs branching out, and it would be more expensive.
I would assume it is because its wt is ditributed over four supports (legs) rather than two. In addition there is more mass around its central gravity.
The spiny anteater, more correctly known as the echidna, does indeed have four legs. It is a mammal, and all terrestrial mammals have four legs.
Only two legs means there is always a direction that is not supported. Try balancing a drawing compass on the two points.
No, they only have two legs.