Triangles Galore

Last year, I completed two sweaters based on Colleen Davis’ Triangle Mambo sweater pattern. I worked on the first sweater while Iris was undergoing a tonsillectomy. In the confusion when she came out of the anesthesia and cried for mommy, I lost the pattern. So the sweater is loosely based on Colleen’s pattern. Fortunately, I read the pattern all the way through before commencing like a good girl.
I am wearing the jewel-toned version made from 5 balls of Kureyon and assorted solids and heathers. My SIL, Debbie, is wearing the one made from 9 balls of Kureyon (with only 2 m of yarn to spare!).
Here is the back.