One such fine illustration can be seen in an old optical illusion where a Cat is hidden behind horizontal lines. The above optical illusion is a visual test that will play tricks on you by hiding ...

coordinate. Graphs of the form \({y} = {c}\) and \({x} = {c}\), will either be a horizontal or vertical line. All the points on the horizontal line below have a y-coordinate of \(4\), so you can ...

Did you know that different types of lines have different names? A vertical line goes up and down. A horizontal line goes left to right. Why not have a look around and see if you can find any ...