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# Geometry

This is a first year, high-school level course on Geometry (which is based on Euclid's elements). It revisits many of the basic geometrical concepts studied in earlier courses, but addresses them with more mathematical rigor. There is strong focus on proving theorems and results from basic postulates.
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Transformations
Let's think more visually about things like shifts, rotations, scaling and symmetry.
All content in “Transformations”

### Symmetry

Let's get an intuitive understanding for symmetry of two dimensional shapes.

### Exploring rigid transformations

Let's use some pretty cool software widgets to see how we can transform a shape through translations, rotations, dilations and reflections.

### Dilations or scaling around a point

We understand the idea of scaling/dilation from everyday life (hey, let's make it bigger or smaller keeping the same proportions!). In this tutorial, you'll understand this type of transformation in a much, much deeper way.

### Transformations on the coordinate plane

Let's continue our deep voyage through the world of transformations by thinking about how points map to each other after a transformation.