Point 5 = 0.5 or 1/2 or 50%
No. In an ordered pair for a point in the xy-plane the first number is the x-coordinate and the second is the y-coordinate. (2, 5) is the point with an x-coordinate of 2 and a y-coordinate of 5; (5, 2) is the point with an x-coordinate of 5 and a y-coordinate of 2. Only if the x- and y- coordinates are equal are the points the same point. However, the point (5, 2) is the reflection of the point (2, 5) in the line y = x.
There is no number between 5 and 5. It is the same point on the number line and a word like between would imply a space from one point to the next on the number line.
The same numerator with denominator 10.
If A is at (5, 2) and B is at (5, 2) then they are both the same point; and if C is at (0, 2) and D is at (0, 2) then they are both the same point; and the quadrilateral is a [straight] line.
The freezing point is the same as the melting point.
The freezing point is the same as the melting point, temperature-wise.
Yes, numerous rays can have the same point.
at control point 5
The freezing point
I don't think such a point has a special name. Perhaps you are thinking of the Lagrange points, but that's not exactly the same.
No - expressed as a decimal, 16 3/5 percent is equal to 16.6 percent.
Yes, they are identical.