Angle 5 is congruent to angle 2.
When 2 lines cross each other, the 2 angles across from each other will be congruent.
Armenian
Tamaz V. Gamkrelidze and Vyacheslav Ivanov proposed the Armenian hypothesis. The Armenian hypothesis suggests that Proto-Indo-European was spoken in Eastern Anatolia, Southern Caucasus and Northern Mesopotamia which are located in the borders of Europe and parts of Asia. It indicates the people travelled from Proto-Indo-European homeland to other neighboring parts of the world.
Hello! Ahh okay let’s see... I’ve studied this before.
So an example of an open system can be something like living organism such as a human being. We actively interact with our environment, which results in changes to both the environment and us. For example... we eat to acquire energy.
I hope this helps, I tried to give a pretty detailed example. Have a great night!
~Brooke❤️