why did Hitler have a small square shaped mustache?

Because he wanted it. He thought it suited him.

hey Ms.Sue, can you please help Anonymous with his/her math questions

https://en.wikipedia.org/wiki/Toothbrush_moustache

I don't know how to solve those problems.

Adolf Hitler's iconic small square-shaped mustache is attributed to both personal reasons and practicality.

To get an answer to historical questions like this, it is important to conduct research from reliable sources such as books, articles, or documentaries that provide information about Hitler's life and appearance. These sources can provide the most accurate and detailed explanations.

Hitler's mustache is believed to have originated from his time serving as a soldier in World War I. The First World War witnessed the widespread use of gas masks, which required a sealed fit to protect soldiers from toxic gases. As a result, soldiers were required to shave off their beards and modify their mustaches to ensure a tight seal on the gas mask.

It is speculated that Hitler chose to keep a small strip of mustache under his nose to maintain facial protection while adhering to military regulations. Over time, this distinctive style became associated with him, and it remained a defining feature of his appearance throughout his political career.

However, it is important to note that the reasons behind Hitler's decision to maintain this particular mustache are not fully documented. So, while this explanation has been widely accepted, it is based on historical analysis and speculation rather than direct evidence from Hitler himself.