What's the difference between a hand-drawn plan and a bird's eye view?

Hand-painted is hand-painted. A plan is a plan in which every object stands at a certain angle and is projected onto a certain plane by geometric means. There are the following forms: first, orthographic projection; Second, multi-faceted projection; Third, double-sided projection; Fourth, three-sided projection; This design is called floor plan. Also known as plane structure. Bird's eye view: overlooking the panorama from the air. It is a three-dimensional figure, and there is a course called three-dimensional composition in design. Usually, to build a house, you need a plan, an axial side view, a section view and a bird's eye view.