1. Find equivalents:

2. False or true? 

1. The Greek mathematician Euclid worked in Egypt, 2,300 years ago.

2. We know much about his life.

3. He is famous for writing Elements, a series of 15 books.

4. His Elements contained geometric principles and theorems that were to form the basis of mathematics for more than 2,000 years.

5. Mathematician and physicist Albert Einstein wholly supported Euclid's geometry.

6. Euclid dealt also with music and other subjects.

7. The ideas of the Greek mathematician and philosopher Pythagoras contributed to the development of modern mathematics and Western philosophy.

8. Pythagoras wanted to explain all natural phenomena in terms of arithmetic.

9. He is best known for his formula for the proportions of the sides of an obtuse-angled triangle.

10. Many concepts and notations (such as arithmetic and geometric sequences and square numbers) fundamental to modern mathematics are based on Pythagoras's ideas.

3. Find synonyms: 

simultaneously, to confirm, to know, entire, to find out, to vary, to stand for, origin, whole, probability, to differ, zero point, to represent, likelihood, computation, to display, at the same time, to support, calculus, to show.