Basic shapes: Shapes

💬 [形] is the shape or form part, so you can spot it in many shape words: [圓形] (round), [三角形] (triangle), [球形] (spherical). [狀] adds the idea of condition or appearance, so [形狀] means a thing's overall shape.

💬 Many basic shape words are built as "description + [形]": [圓形] round, [方形] square-shaped, [三角形] triangular. Once you know that pattern, new shape words are easier to guess.

💬 [正方形] is specifically a square, while [方形] can mean a square-like or rectangular shape more generally in some contexts. The [正] adds the idea of "regular" here: all sides equal.

💬 [三角形] literally works as [三] + [角] + [形]: three-corner shape. You'll see the same build in other words too, like [五角形] for a five-sided shape.

💬 [長方形] is the usual word for a rectangle. Even though [長] often means "long," here it just helps distinguish a rectangle from [正方形], a square.

💬 [球形] means spherical or ball-shaped, built from [球] "ball" plus [形] "shape." You can reuse this pattern with object words too, like [心形] for heart-shaped.

💬 [立方體] is the 3D solid "cube," while 2D shape words often end in [形], like [正方形]. A useful pattern is that [體] often points to a solid body or 3D form.