Theyre called vertices!
I dont understand what you mean by how you label it...
No.
A line?
I don't see any triangle below, but the idea is to add the length of all the sides.If it's an isosceles triangle, two of the sides must have the same length.
a function whose magnitude depends on the path followed by the function and on the end points.
No because a defined straight line has 2 end points.
I believe the common end points are called vertices. Each separate one is called a vertex, but the plural of "vertex" is "vertices."
A triangle vertices are the end of a line; in a triangle there are only three such points.
If the start and end points of a figure are same, then it is called a closed figure. Examples can be a square or a triangle or a pentagon.
3 my good and evil friends.
The end of a magnet that points towards the Earth's Geographic North Pole is labeled as the North Pole of the magnet, while the end that points towards the South Pole is labeled as the South Pole of the magnet.
The turning points of the cycle are called the peak, which is at the end of the expansion phase, and the trough, which is at the end of the contraction phase.
A line.
The points are known as the poles of the globe.
anode and cathode
If it has defined end points then it is a line segment.
The tip of a triangle is known as a vertex. A triangle has 3 vertices, 3 sides, and 3 angles. As well, apex can be described as the pointed end of a triangle tip.
A closed pathway where teh start and end points are the same is called an electric circuit.