3 sentences

1. 在图论中，这种结构被称为平面图。

   zài tú​lùn zhōng, zhè zhǒng jié​gòu bèi chēng​wéi píng​miàn​tú.

   In graph theory, this structure is called a planar graph.

   Source: Dong Chinese Dictionary

2. 这张公寓的平面图显示了两个卧室。

   zhè zhāng gōng​yù de píng​miàn​tú xiǎn​shì le liǎng gè wò​shì.

   This floor plan of the apartment shows two bedrooms.

   Source: Dong Chinese Dictionary

3. 这张建筑平面图清晰地展示了每个房间的布局和大小。

   zhè zhāng jiàn​zhù píng​miàn​tú qīng​xī de zhǎn​shì le měi gè fáng​jiān de bù​jú hé dà​xiǎo.

   This architectural floor plan clearly shows the layout and size of each room.

   Source: Dong Chinese Dictionary