You read that question very literally. Fridges are often embedded in walls, from our vantage point they have four corners. Yes, technically they have 8 corners

You read that question very literally. Fridges are often embedded in walls, from our vantage point they have four corners. Yes, technically they have 8 corners, but so too does a door. “Does it have four corners?” is more of an abstraction from the human viewpoint.