28 12 20 18 by Howard Bee Triangle


https://www.youtube.com/watch?v=OgcQsQICFs4&feature=youtu.be&fbclid=IwAR2z9i66G7a0BKnDPfdgrxu3IBJXJ04k_NaXKgdxTF82IhAoi5Y15nKetI8