The Solar Eclipse Totally Proves Earth A Globe
image source: Earth-Moon System to Scale - TomRoelandts.com
image source: https://www.timeanddate.com/eclipse/in/usa/new-york
image source: Earth-Moon Distance
combined from image sources, above
"Why the Sun's rays that land on Earth are parallel - The further a planet is from the Sun, the smaller the arc of the Sun's rays that intercept the plant. The Earth is so far away from the Sun that for many purposes, all the Sun's rays can be considered to be parallel. Source: Memorie Yasuda."