10:57

From my favorite geometry book.

15:44

Half of a deathly area...

15:26

a look at the future...

14:56

How big can y be?

5:25

Solving a viral geometry problem from Twitter

16:31

How to Stop Procrastinating and Finally Take Action

10:28

What is the radius of 🔴?

7:18

How large is the blue ▲