All Triangles are equal to 180° on a plane surface no triangle is equal to 180° on a curved surface.
It is actually the top one on the second picture because if you were to rotate it 180 degrees, it would end up on the same points
Answer:
Range!
Step-by-step explanation:
It's the range because it's subtracting largest and smallest number in the set.
I think that first one represents a function.
