Yes: "1." 2 for 4 corners; 2.4 angle 1, 2 angle 2; "3."4 corners 1, 1 corner 4; 4.4 angle 1, 2 angle 1, 1 angle 2; "5."2 horns and 4 pieces; "6."2 Angle 3, 1 Angle 2; "7."1angle 8; 8. 1 angle 6,21; 9. 1 corner 4,2 corner 2 * * 9 pasting method.

He can have the following stickers:

Two 40 cent stamps;

Four 20-cent stamps;

8 stamps 1 cent;

2 Post 40 points and 1 point;

Four 20-point stickers, 20-point stickers and 40-point stickers;

2 posts 40 points, 8 posts 1 point;

1 40 points, 4 points 20 points;

40 points for 2 posts, 4 posts 1 point;

1 post 20 points and post 6 points 1 point;

9 kinds of stickers.

Olympiad: Olympic Mathematical Competition or Mathematical Olympiad, referred to as Olympiad. Olympiad is just a math contest, not a difficult or strange problem as we know it.

The Olympic math problem is the topic of the Olympic math competition.

As an international competition, the International Mathematical Olympiad was put forward by international mathematical education experts, which exceeded the level of compulsory education in various countries and was much more difficult than the college entrance examination. According to experts, only 5% of children with extraordinary intelligence are suitable for learning the Olympic Mathematics, and it is rare to reach the top of the international mathematical Olympics all the way.

Olympic Mathematics has a certain effect on teenagers' mental exercise, which can exercise their thinking and logic, and it plays a more profound role for students than ordinary mathematics. The number-based competitions in the world have a long history: there were competitions to solve geometric problems in ancient Greece; During the Warring States Period, horse racing between Qi Weiwang and Tian Ji was actually a game of game theory. In the 16 and 17 centuries, many mathematicians liked to ask questions to challenge other mathematicians, and sometimes held some public competitions. There are some famous Fermat's Theorem in the competition questions: when the integer n≥3, the equation has no positive integer solution. Modern mathematics competition is still a problem-solving competition, but it is mainly conducted among students.