# Spatial and geometrical reasoning

We have identified six Each theme page has links to |

##### Two aspects of geometry

Geometry education at the school level should attend to two closely-entwined aspects of geometry: the spatial aspects and the aspects that relate to reasoning with geometrical theory. These twin aspects of geometry, the spatial and the deductive, are not separate; but interlocked. Just as geometry and algebra have been called the “twin pillars” of mathematics, spatial and geometric reasoning are the *yin-yang* of geometry education. Both are interconnected and inter-dependent in such a way that each gives rise to the other.