My Peekaboo Book: Shapes, Colors and Opposites (Peekaboo)
Shapes
Build a Block Books Matching Shapes (Build-A-Block Books)
by Piers Baker
Various shapes such as the square, circle, and triangle invite the reader to search and find examples of their use in this book and in other things seen.
Mickey Mouse Clubhouse: Preschool Numbers and Shapes (Disney Mickey Mouse Clubhouse)
by Marcy Kelman