(a) V - the sun, W - The moon
(b) Proofs include:
- The gradual emergence of a ship approaching the shore.
- Circumnavigation of the earth along a straight path leads one to the starting point from the opposite direction.
- The different times during which the sun rises and sets in different parts of the world
- The circular shadow cast by the earth during a lunar eclipse.
- The earth is a planet and all planets are spherical.
johnmulu answered the question on September 30, 2017 at 06:53
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