My Favorite Math Fun Facts

For several years, I have been collecting ``Math Fun Facts'', which are juicy math tidbits that I have been using to start off math classes as a warm-up activity. Math Fun Facts are can be from any area of mathematics, can be presented in less than 5 minutes, and are meant to arouse my students' curiosity and show that mathematics is full of interesting ideas, patterns, new modes of thinking, and come from diverse sources. In this talk, I will present my favorite Math Fun Facts. They're definitely fun, but will they be YOUR favorites? You decide.