Geometry is a basis of understanding the physical world. Euclidean geometry is a basic form of geometry. If you look around you will notice how there are all kinds of shapes and sizes. This study consisted of measuring angles, segments, points and shapes by comparison. Euclidean geometry is an obsolete, antiquated study of geometry. It is the precursor of modern non-euclidean geometry.
Euclidean geometry was the ancient Greek's basic understanding of size, segments, and shapes. Two euclidean axioms are conditional or faulty: axioms two and five. The rest of Euclidean geometry's axioms are proven, however the use of it is replaced by the updated system of non-euclidean geometry.