The points $(1, -1), (2, -2), (4, -5), (-3, -4)$:

In a Cartesian plane,the graph of $x=0$ is $\ldots \ldots \ldots$

In which quadrant does a point lie if its $x$-coordinate is negative and the $y$-coordinate is positive?

See the figure and write the following:
$(i)$ The coordinates of $B$.
$(ii)$ The coordinates of $C$.
$(iii)$ The point identified by the coordinates $(-3, -5)$.
$(iv)$ The point identified by the coordinates $(2, -4)$.
$(v)$ The abscissa of the point $D$.
$(vi)$ The ordinate of the point $H$.
$(vii)$ The coordinates of the point $L$.
$(viii)$ The coordinates of the point $M$.

State whether the following statement is true or false:
The coordinate axes divide the Cartesian plane into four parts.

What is the measure of the angle formed by the coordinate axes (in $^{\circ}$)?