Perpendicular lines may form a "tee" or a "cross"
The hexagon haded 6 perpendicular lines.
The flagpole stood perpendicular to the ground, creating a striking silhouette against the sky.
The flagpole is perpendicular to the ground, standing straight up without any lean.
If two lines are perpendicular to eachother, they have right angles. The format for perpendicular lines is: x is perpendicular to -1/x. This is called the opposite reciprocal.
You would use this: ┴
during black friday, the lines to get into the store squelched me.
There is no English word "perpend." There is a mathematics word "perpendicular," which means at a right angle, but you may be referring to some other word that you did not spell correctly.
Jensen doodled in the white space between the lines in his textbook
The wind's movement of the wavy lines in the sand were fascinating to watch.
Construction, engineering, drawing, and architecture all use parallel and perpendicular lines. Other than that, it is an important topic because you are learning how to apply the language and tools of mathematics to an intuitive system. These topics have proven important in the history of human kind and also many before you have shown that by learning about parallel and perpendicular lines, one learns how to use math and logic. It is doubtful that you can make a living off of parallel and perpendicular lines, but if you can't understand parallel and perpendicular lines, then I worry about your future.
You have to know the slopes of both lines. -- Take the two slopes. -- The lines are perpendicular if (one slope) = -1/(the other slope), or the product of the slopes equals to -1.
The insurgents' abortive attempts to infiltrate our lines were rebuffed by our advance teams.