Your Daily Rainbow

I pass by another high school on my way to work every day.  Don't know how long ago this was painted, but I finally noticed it last week.

You know how much I like a good rainbow, right?

I understand from the newspaper that the rainbow was the result of a geometry lesson.  (Probably surface area?  That's the chapter my geometry class is just finishing up.)

Perfect: math + rainbows.

Happy day!