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How is height defined in mathematics?
In mathematics, the height of a figure is defined as the length of a vertical line segment starting from a point perpendicular to the bottom (surface).

The definition of height is relative, as opposed to the bottom and the vertex.

Example:

1, 1 Vertex passing through a triangle is only 1 base (or their extension lines) high;

2. 1 vertex passing through a quadrilateral is the height of two bottoms (or their extension lines);

3. The height of 1 vertices passing through the n polygon is n-2 bottoms (or their extension lines).

Mathematical graphics refer to graphics related to mathematics, such as geometric graphics and functional graphics. These include planar graphics (such as lines, curves, polygons and planar areas) and spatial graphics (such as spatial curves, surfaces, solids, spatial areas, etc.).