Solution to Challenge 2 The tree - One body (the trunk), two antennae, six legs. - Leaves: 2 antennae + 6 legs = 8 leaves, plus the body ends (head and tail), so about 10 flaps if the head and abdomen are shaped separately. Choosing a base - A bird base has 4 points. A frog base has 4 broad points. Neither has 8 or more. - So you must split flaps: each broad point of the frog base can be divided into two or three narrower points with a petal or squash fold. - Plan: use a frog base for 4 main points, then split two of them for legs, giving enough flaps for six legs and two antennae. Checks - Count flaps against leaves: every leaf needs its own flap. - Compare lengths: antennae are long and thin, legs are medium. Put the long flaps at the corners of the base, where the most paper is available. - Insects with many limbs need either a larger sheet or a more advanced base. A real design would use a tree-packing layout, as in Robert Lang's TreeMaker. Checkpoint: leaves counted (8 limbs plus body), base chosen, and the flaps that must be split identified.