A Lil' Libros Bilingual Book of Shapes Explore the city of Tenochtitlan along side Cuauht moc, the last Aztec emperor--where you'll come across the circulo (circle) in the Aztec calendar, the tri ngulo (triangle) in the pyramid, the heart in the shield of an Aztec princess, and more This book introduces your little one to shapes and their first English and Spanish words.