Question

Fill in the blanks:
(i) The $x$-axis and $y$-axis taken together determine a plane known as______
(ii) The coordinates of points in the $XY$-plane are of the form_____
(iii) Coordinate planes divide the space into_____ octants

Answer 1

(i) The $x$-axis and $y$-axis taken together determine a plane known as $XY$-plane
(ii) The coordinates of points in the $XY$-plane are of the form $(x,y,0)$, where $x$ is $x$-coordinate and $y$ is $y$-coordinate
(iii) Coordinate planes divide the space into $8$ octants.