Q43 of 50 Page 220

Fill in the blanks

A line is parallel to xy-plane if all the points on the line have equal ________.

z-coordinate

Explanation:


If a line is parallel to xy plane, perpendicular distance of each and every point on line from xy plane remains.


∵ z-coordinate of a point gives its perpendicular distance from xy plane.


This implies that z-coordinate of every point must remain the same.


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A line is parallel to x-axis if all the points on the line have equal ________.

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