The Earth is a sphere because out of all solid bodies a sphere is the most stable shape(assuming all solids to have equal masses and same average density). A sphere is the best suited shape to withstand gravitational attraction of close- together particles, as seen during the formation then attraction of other heavenly bodies. If the Earth were any shape other than a sphere (or an oblate spheroid, which is what the earth actually is) then it would not be able to maintain it's structure and would eventually become spherical due to gravitational pressure.
an eclipse is a evidence of the earth being in spherical shape is that it can figure it self...
Spherical
Earth's shape is oblate spheroid.
the first person to discover earth was round was god he made the earth in a spherical shape b00m theres ur answer
Spherical
A triangle with an approximately spherical shape on top, is one possibility.
A basketball is in a spherical shape.
Gravity.
spherical
An orange is an everyday object that has a shape similar to Earth, with a round and spherical shape.
It is the shape formed by three non-collinear points on the surface of a sphere which are joined together by straight lines in which two of the sides are of the same length. An example might be a triangle from the earth's North pole to two points on the same latitude - specially the equator.
Not normally but try drawing a triangle on a spherical shape