Geometry in every day life

 Mathematics is as old as mankind and has been an extremely useful tool in the development of mankind. Most scientific advances are based on this science, hated by many and loved by few. One of its first branches is Geometry, worked by ancient civilisations, especially the Egyptians, to whom its origins are attributed, since every year they had to measure their land due to the overflowing of the Nile river. But, not only the Egyptians had practical needs to which they gave solution by means of Mathematics, but also the Babylonians, the Greeks and others.

Every day we use mathematical knowledge to solve problems of all kinds, especially problems of construction, design, production, production of medicines, among others. One of these skills has to do with angles, which we often use without realising it. For example, when we place objects on walls, such as pictures, we have to place them at a 90 degree angle to the wall to prevent them from falling.

We also see how the roofs of the houses are inclined, because all buildings must have an angle of inclination in their roofs, so that the water does not stagnate when it rains.

In car design, angles also play an important role. Car wheels are neither completely vertical nor parallel to the longitudinal axis of the car. In particular, the steering wheels do not rotate around a vertical axis, but around an inclined axis. The angles which the wheels and the stub axles belong to the horizontal and vertical planes serve to obtain the best driving conditions, i.e. to avoid dragging and consequent tyre wear, to improve stability, to obtain a smooth and progressive steering effort and to facilitate the return of the steering after cornering.

On roads there are 4 types of curves whose measurements correspond to the different types of angles: a) Open curves: they have an angle of less than 90 degrees; b) Right angle curves: easy to identify because their 90 degree angle traces a huge L; c) Closed curves: they have a 180 degree angle with a U-shape; and d) Double radius curves: the most difficult, because their radius closes when they are entered.

    Could you tell me more examples? I'll read you bellow!