Why is it that we can sometimes see half a moon or quarter a moon

Lunar Phases and Eclipses

What is the difference between the first quarter of the moon and the last quarter of the Moon? They both look the same to me? - Quora

What is the reason that the moon is sometimes completely round and sometimes half-moon shaped? - Quora

Is it good or bad when you see a red ring around the moon? - Quora

The Moon Phases Explained (Diagram Included)

All 8 Moon Phases In Order & How They Can Affect You

Why can I see the whole moon during various non-full-moon phases? - Quora

Why can we sometimes see the moon in the daytime?

What happens to the Moon during New Moon?

First quarter moon appears half-illuminated

How to draw The Phases of the Moon diagram drawing - easy and step by step science poster making

Why can I sometimes see a horizontal half moon instead of a vertical one? - Quora

How does a half moon happen? - Quora