A triangles angles add up to 180 degrees which follows the formula n-2*180

This is a super important basic rule in geometry. It helped me a lot while getting better at math this term.

The Triangle Sum Theorem is a really cool rule in geometry. It says that if you add up all the angles inside any triangle, they will always equal 180 degrees.

So, if you have a triangle and you measure each of its three angles, and then you add those angles together, you'll always get 180 degrees.

For example, if one angle is 90 degrees, another is 45 degrees, and the last one is also 45 degrees, then:

90 + 45 + 45 = 180 degrees.

This works for every triangle, no matter how big or small, or what shape it is. Isn't that awesome?

I got the picture above from math monks

After learning it, I made this model, which I gave to my teacher, and is used in my school often now.