Y by
Vasya started saving money for a new spinner. All accumulated, he puts the money in a rectangular box. So far he saved up
dimes. At the bottom of the box, they lie, as shown in the figure (adjacent dimes touch). Prove that the centers of three the top coins lie on one straight line.



This post has been edited 3 times. Last edited by parmenides51, Feb 20, 2021, 7:33 AM