This article explains which angle is called detailed.
Geometry is an interesting science. But for schoolchildren it is considered difficult, since it is necessary to solve different problems and prove theorems. Many rules are incomprehensible the first time, and the figures have interesting definitions that first you need to delve into the topic in order to understand them. For example, many children do not understand why the detailed angle is called stupid and why its sides are called rays. Let's understand together.
Which angle is called expanded in geometry?
We are used to the fact that corners are figures that you see everywhere: the corner of the room, the corner of the shelf, the corner of the book, the corner of the cabinet and so on. All these are straight or sharp corners. But there is still a dull and detailed angle. A dumb angle is the angle that is more than 90º.
Which angle is called detailed? Here is the definition:
- A detailed angle in geometry is an angle of 180º.
Remember: This angle is deployed because its sides lie on one straight line. It is also called a dull angle, because its degree measure is more than 90º.
To get a detailed angle, you can simply draw a straight line and put an end in the middle. You can do the opposite, put a point on the plane and draw a line through it - you get a detailed angle.
The sides of the expanded angle are called rays, because each side of the corner complements the other side. As a result, it turns out that the sides of this angle are additional rays. Above the figure shows that point K is the middle of the corner or its peak, KN and KC are sides of the angle or beam. Now you find out what kind of angle is a detailed angle and what is its geometric features.
Video: Detailed angle
