The notion of angle, which comes from the Latin word angŭlus, refers to a figure of the geometry that is formed from two lines that intersect each other on the same surface. It can also be said that an angle is formed by two rays that share the same vertex.
Angles can be measured in different units: the sexagesimal degree and the radian are the most frequent measurements. According to this measurement, the angles are classified in different ways.
If we place ourselves in the territory of the sexagesimal degrees, a right angle, for example, it measures 90 °. If the angle measures less than 90 ° but more than 0 °, it is scored as acute. On the other hand, if it measures more than 90 ° and less than 180 °, it is called obtuse angle.
The unit taught first in school is the sixth grade, as it is easier to understand: with the help of a instrument measurement, such as the protractor, we must determine the opening of the angle and assign the corresponding value, similar to what we do when measuring the extension of an object in centimeters. However, radian is much more useful and is used predominantly in the scientific environment.
To carry out the measurement From an angle in radians we must continue its arc until completing an imaginary circle, in whose center the vertex of the first is located; In other words, we can think of a cake that is missing a portion, this being the angle to be measured. The value of 1 radian is the equivalent of the arc whose length is, in turn, equal to the radius of the circumference in question; half the circumference is π (pi) radians, while 2π radians is the entire circumference. Converting a sexagesimal degree value to radians consists of multiplying it by pi and dividing it by 180.
The null angle, the straight angle, the concave angle and the full angle are some of the most common types. Also, taking other features, we can talk about adjacent angles, supplementary angles, complementary angles, exterior angles, interior angles and solid angles.
In the field of computer graphics development, which encompasses various forms of modern entertainment such as cinema and video games, the concept of angle is among the most relevant, since it appears in various situations: the point of view of the camera, the direction in which an object is moving, the rotation of different parts of an animated model, collisions between two objects (such as the ground and a character or two characters), and the influence of the wind on the scenario are just a few examples.
Unlike other operationsLike addition and multiplication, the computation required to find the value of an angle is relatively demanding for a processor, as is that of the square root, and so programmers must find “inexpensive” methods to avoid time overload of execution; a very common solution consists of calculating all the necessary values during the load of the program, to elaborate a list that later can be consulted without problem.
Beyond the limits of geometry, the idea angle to name a corner or yet corner: “I think we could place the new library at that angle.”, “The grandmother’s vase shines in a corner of the dining room”.
Angle, on the other hand, is a perspective or a point of view. It is said that a person observe reality according to your own and particular gaze, known as an angle: “From my angle, experience is the most important thing to successfully carry out this type of task”.