Two Rhombic Triacontahedra, Each Decorated with Birthday Stars

In yesterday’s post, I unveiled my annual birthday star for my new age, 54. Today, I’m placing that 54-pointed star on each of the thirty faces of a rhombic triacontahedron. I use a program called Stella 4d (free trial available right here) to do this, and it allows images on polyhedron-faces to either be placed inside the face, or around the face. Here’s the “inside” version:

And here is the “around each face” version:

Which one do you like better?

My 2019 Birthday Star

I was born 51 years ago today. To mark the occasion, here’s a 51-pointed star. It’s made of {17/7} heptadecagrams repeated 3 times, and with their edges extended as lines, in three different colors. This works because 51 = (17)(3).

Fiftystar: My 2018 Birthday Star

Every year, it is my tradition to make a star for my birthday. This is the one for today, with fifty points for my new age.

star 50

I like the view from age 50. I can see half-centuries before and after right now. To see 1968, I look into the past, which is behind me. If I look forward, I see ideas for what 2068 could be like.

On Dr. Martin Luther King, Jr.’s Birthday: A Public Service Announcement

This year, in the USA, the birthday of Dr. Martin Luther King, Jr. is observed tomorrow. However, it is today — January 15th — which is his actual birthday. 


Source of image:

My 2017 Birthday Stars

I turn 49 today. This is a 49-pointed star, to mark the occasion — an old tradition of mine.


My first birthday was in 1968 — on the day I was born. A year later, on my second birthday, I turned one year old. Carry this up to the present, and that makes today, when I turn 49, my 50th birthday. For those reasons, here’s a second star, with 50 points.



Older Birthday Stars, From When I Was Younger

I started this blog in July of 2012, so the birthday stars I made in January 2012 (when I turned 44) and January 2011 (when I turned 43) did not appear here in those years. I found them, though, and will post them now.

The first two are different colorings of a 44-pointed star, from January 12, 2012, the day I turned 44:

birthday star 44 from 2012 Bbirthday star 44 from 2012

These three are different color-versions of 43-pointed stars, from a year earlier — January 12, 2011:

43 star{36_slash_17} schlafli symbol star 2012


I turn 48 today, so please visit the post right before this one, if you’d like to see this year’s birthday stars. =)