The first two questions were successfully completed. Only the third question remains: it is required to draw a polygon with positive 17 only with a ruler.
The young man racked his brains, but made no progress.
Difficulties inspired fighting spirit. He finally solved the problem.
The tutor was shocked to see the students' homework. He said excitedly, "Do you know? You have solved the math problems left over from more than two thousand years! "
It turned out that the tutor handed the notes on this topic to the students because of mistakes.
Whenever I recall, the young man always said, "If someone told me that this is a math problem with a history of more than 2,000 years, I might never have the confidence to solve it."
This young man is Gauss, the prince of mathematics. 2. When Gauss was in elementary school, once after the teacher taught addition, because the teacher wanted to have a rest, he came up with a topic for the students to calculate. The theme is:
1+2+3+ .....+97+98+99+ 100 = ?
The teacher is thinking, now the children must start class! I used this as an excuse to go out, but Gauss stopped me! ! It turns out that Gauss has worked it out. Little friend, do you know how he did it?
Gauss told everyone how he worked it out: add 1 to 100, and add 100 to 1, adding two lines, that is:
1+2+3+4+ .....+96+97+98+99+ 100
100+99+98+97+96+ .....+4+3+2+ 1
= 10 1+ 10 1+ 10 1+ .....+ 10 1+ 10 1+ 10 1+ 10 1
* * * There are one hundred sums 10 1, but the formula is repeated twice, so the answer is equal to < 5050 & gt.
Since then, the learning process of Gauss Elementary School has already surpassed other students, which laid the foundation for his future mathematics and made him a mathematical genius! Welcome to adopt!