All triangles have 180 degrees (interior angles). That holds true until someone draws a triangle on a globe, and then it has 270 degrees. Then someone defines triangle as figure drawn on a flat surface, as if such a thing is at all possible in a universe that is curved. Even flat surfaces aren't flat.

We each believe in things because to do otherwise would force us all to live in split-level realities. How DO you describe the direction 'left' when you and the entity to whom you are giving the direction have nothing in common?

Science has its foibles, because scientists are humans, not gods. I would no more put science on a pedestal than I would religion. I trust neither anymore. They have each lied to protect their respective 'positions of authority'. Remember the "Rule of 48".