A. The slopes of the two lines are negative reciprocals. B. The slopes of the two lines are equal. C. The slopes of the two lines are zero. D. The slopes of the two lines are undefined.
https://answers.yahoo.com/question/index?qid=20110416125615AAXUbdT
Parallel Lines:Denition: We say that two lines (on the same plane) are parallel to each otherif they never intersect each other, ragardless of how far they are extended oneither side. Pictorially, parallel lines run along each other like the tracks of atrain. BCAD Lines AB and CD are parallel to each other.
http://www.berkeleycitycollege.edu/wp/wjeh/files/2013/01/geometry_note_parallel3.pdf
Exterior Angle Theorem. The measure of an exterior angle of a triangle is equal to the sum of the measure of the two non-adjacent interior angles; the sum of the exterior angles of a triangle is 360°.
https://quizlet.com/943146/geometry-master-list-flash-cards/
A square and a rectangle have perpendicular and parallel lines. The two side lines extending upwards from the base line are perpendicular to the base line. The line extending … from each of the side lines across the top is perpendicular to the side lines. The top line is also parallel to the base line, and the side lines are also parallel to each other. + 25 others found this useful. Marco Mejia Villatoro.
http://www.answers.com/Q/If_two_parallel_lines_are_perpendicular_to_the_same_line_what_must_be_true_for_all_three_lines
In Fig 1, the line AB and a line segment CD appear to be at right angles to each other. Determine if this is true. To do this, we find the slope of each line and then check to see if one slope is the negative reciprocal of the other. If the lines are perpendicular, each will be the negative reciprocal of the other.
http://www.mathopenref.com/coordperpendicular.html
In two dimensions the lines would be intersecting lines not perpendicular (I believe this is called transversal, see related link). If you are in three dimensions they would b … e skew lines, like to jets crossing above you that don't hit each other. One is higher than the other.
http://www.answers.com/Q/If_two_parallel_lines_are_perpendicular_to_the_same_line_what_must_be_true_for_all_three_lines
The line CD if it is perpendicular to AB has a slope of -1/0.5 or -2. Adjust points C or D to make CD perpendicular to AB and verify this result. Fig 1. Lines are still perpendicular. Remember that the equation works both ways, so it doesn't matter which line you start with. In the figure above the slope of CD is -2. So the slope of AB when perpendicular is. Note too that the lines to do not have to intersect to be perpendicular. In Fig 1, the two lines are perpendicular to each other even though they do not touch.
http://www.mathopenref.com/coordperpendicular.html
When two lines are perpendicular, the slope of one is the negative reciprocal of the other. If the slope of one line is m, the slope of the other is. Try this Drag points C or D. Note the slopes when the lines are at right angles to each other.
http://www.mathopenref.com/coordperpendicular.html
\ 0 s supp. to the same angle are ˘=5. ABjjCD 5. Alternate Interior AnglesThe converse of this statement is also true. In other words,If two parallel lines are intersect by a transversal, the same side interiorangles are supplementaryTheorem: If two lines are perpendicular to the same line, then they. are parallel to each other. Proof: In the picture below, lines AB and CD are perpendicular to the same. line, EF.
http://www.berkeleycitycollege.edu/wp/wjeh/files/2013/01/geometry_note_parallel3.pdf
Question: What is perpendicular and how do I find a line perpendicular to a given line. Reggie Says: Perpendicular means it intersects at a right angle. So the slope would be the opposite reciprocal of the slope of the given line. But a horizontal line is perpendicular to a vertical line and vice versa. So if there is no x in the equation of the line, the line is horizontal. so a perpendicular line would be a vertical line (x = ?).
https://answers.yahoo.com/question/index?qid=20110416125615AAXUbdT
if two lines are perpendicular, which statement must be true?
If the lines are perpendicular, each will be the negative reciprocal of the other.