This material may consist of step-by-step explanations on how to solve a problem or examples of proper writing, including the use of citations, references, bibliographies, and formatting. This material is made available for the sole purpose of studying and learning - misuse is strictly forbidden.1. d) Babylonian invented zero.
2. d) Eleatic school
3. a) A triangle inscribed in a semicircle has a right angle
4. d) (45, 26, 53)
5. b) Euclid was a student of Apollonius.
6. d) all of them...