Traditional Culture Encyclopedia - Photography and portraiture - Both sides of an angle can extend indefinitely, right?
Both sides of an angle can extend indefinitely, right?
In geometry, we usually define an angle as a figure formed by two line segments or rays sharing a common endpoint. The endpoint of this * * * is the vertex of the angle. Two line segments or rays of an angle extend from the vertex, and we call these two line segments or rays the edges of the angle.
Because these two sides are infinitely extended, we say that the size of the angle is infinite. This does not mean that the angle itself is infinite, but that the angle can extend in any direction. The size of an angle is used to describe the angle at which two sides extend outward, not the size of the whole angle.
This concept of infinite extension is very common in mathematics and science. For example, in analytic geometry, we usually use a ray to represent a direction, which can extend indefinitely in one direction. In calculus, we often use the concept of limit to indicate that a variable can be infinitely close to a certain value, but it will never reach this value.
Examples of the application of horns in life;
1, Football and Basketball: In football and basketball matches, players' positions and attack and defense angles are very important. For example, in football, the goalkeeper needs to judge the attack opportunity according to the player's shooting angle; In basketball, players need to choose the right angle to make the ball enter the basket when shooting.
2. Architectural design: In architectural design, corners are widely used to design the facade and plane layout of buildings. For example, the architect will determine the entrance angle of the building according to the orientation of the building and the surrounding environment, so as to better integrate into the surrounding landscape.
3. Photography: In photography, photographers can obtain different visual effects by changing the shooting angle. For example, when shooting a building at a low angle, it can highlight the height and solemnity of the building.
4. Cars and wheels: Cars and wheels are also practical applications of angles. The rotation of wheels is a form of angular motion, and the rotation angle of wheels determines the direction and distance of vehicles.
5. Electronic games: In electronic games, the movement, attack and defense of characters all involve the calculation of angles. For example, in a role-playing game, players need to control the moving angle of the characters in order to fight and explore.
6. origami: the process of origami also involves angles. By folding paper into different shapes, many interesting patterns and structures can be created.
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