The first symptom of bone cancer is usually pain or tenderness near the cancer. Bone pain is caused by stretching of the periosteum (thick membrane that covers bone) by the cancer, or by stimulation of nerves within the bone. Bone pain may be hard to differentiate from ordinary low back pain or arthritis.
Geometric art is a phase of Greek art, characterized largely by geometric motifs in vase painting, that flourished towards the end of the Greek Dark Ages, circa 900 BC to 700 BC. Its centre was in Athens, and it was diffused amongst the trading cities of the Aegean.
Cubism was a reaction against traditional modes of representation and impressionist concerns with light and colour. The style, created by Picasso and Braque and first named by the French critic Louis Vauxcelles in 1908, was inspired by the later work of Cezanne cÃ©zanne and By african. sculpturen early 20th-century style and movement in art, especially painting, in which perspective with a single viewpoint was abandoned and use was made of simple geometric shapes, interlocking planes, and, later, collage.