When pieces in a puzzle problem have curved and straight edges, the correct assembly will:

The correct assembly MATCHES edges appropriately — a curved edge of one piece fits against the corresponding curved edge of an adjacent piece, and straight edges align with straight edges — forming a SEAMLESS complete shape without gaps or overlaps. ASVAB Assembling Objects tests precise edge matching. Curved and straight edges are strong clues: a convex curve on one piece fits a concave curve on its neighbor; straight edges line up flush. Use these edge features to determine how pieces connect and to eliminate answers where edges don't actually match. Edge shape compatibility is a key fitting clue.