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The angle α is 22,5°.
First look at isosceles triangles GED and GCD. A simple matter of angle chasing reveals that angle CGE is 45°.
The eightfold path
A way leading to liberation
While practising meditation
And try to do the right actions
In buddhism the work between body and spirit in union
Working on qualities like
Kindness and compassion
A kind of middle way