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They are similar triangles.
There are no ratios that can be used for triangles that are not similar.
Similar triangles can be used in many situations in which angles of two differently-sized triangles are the same. Optics, scale modeling,trigonometry, surveying, astronomy, and many, many other applications of mathematics rely on the concept of similarity.
No, only your brain can. Similar triangles can be used to solve some problems but not others but it is for you to work out - using your brain - whether or not similar triangles are relevant and then to figure out how they might be used.
It is similar to your body or a cup you drink every day
Aren't triangles structurally strong? So they are used in bridges and architechture.
Plutonium is not used in everyday life.
Ldrs are used in everyday life as solar panels.
how are emeralds use in everyday life
The Pythagorean theorem is commonly used in everyday life for various applications such as construction, architecture, and design. It helps in calculating distances, dimensions, and angles in right-angled triangles. For example, it can be used to determine the length of a ladder needed to reach a certain height or to calculate the diagonal distance of a square-shaped object.
Algebra is used in lots of differant ways in everyday life because it's maths.