Inspriation Linear perspective

Yesterday we where drawing inspiration liner perspective they where 3D shapes they looked cool even Loren drawed  one and it was really cool too .A horizon line is a straight line across your page what is a vanishing point a dot that everything points towards do objects look bigger or smaller as they get closer to vanishing points? two points perspective has two vanishing points great for showing a city block. what is one point perspective drawing and why is it useful. three point perspective has three vanishing points good for drawing tall things E.G skyscraper.