Run-on sentences are improved by breaking them up into multiple sentences.
A rhombus is a polygon (a shape with four or more sides). A rhombus being called a quadrilateral specifically.
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Answer:In the history of art, prehistoric art is all art produced in preliterate, prehistorical cultures beginning somewhere in very late geological history, and generally continuing until that culture either develops writing or other methods of record-keeping, or makes significant contact with another culture that has
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