The perpendicular distance of the $Y$-axis from the point $(-2, 5)$ is.......

The distance of the point $P(2, 3)$ from the $x$-axis is

The triangle with the vertices $(0,0)$,$(4.2,0)$,and $(0,9.1)$ is a $\ldots \ldots \ldots$ triangle.

If the distance between the points $(2, -3)$ and $(5, b)$ is $5,$ then $b = \ldots \ldots \ldots .$

In a classroom,$4$ friends are seated at the points $A, B, C$ and $D$ as shown in the figure. Champa and Chameli walk into the class and after observing for a few minutes Champa asks Chameli,"Don't you think $ABCD$ is a square?" Chameli disagrees. Using the distance formula,find which of them is correct.

Find the distance between the following pairs of points: $(a, b)$ and $(-a, -b)$.