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horizontal lines are lines which may be at the angle of 00,1800,3600.if vertical lines stand on horizontal lines it is in the angle of 900
On the basis of the information and context provided in the question, the answer must be "vertical lines".
No. Vertical lines are not.
They are perpendicular if their slopes are mutual negative reciprocals.
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No, a non-square rectangle has two: the horizontal and the vertical. A square has four lines of symmetry: the horizontal, the vertical, and two diagonal lines.
No, they cannot - unless the two lines are effectively the same line.
No. The non-vertical angles need not be related to one another in any way.
They are negative reciprocals Ex -1/2 and 2
There is a percussion clef, which is two short vertical lines at the beginning of the staff.
They are simply just called lines.
No. Horizontal lines have zero slope. Vertical lines have infinite slope.
Technically, a square is a rectangle with four lines of symmetry. A non-square rectangle has exactly two lines of symmetry: the vertical and the horizontal.
Vertical lines parallel to the prime meridian are lines of longitude.
Whenever two lines intersect, vertical angles refers to the angles opposite each other
7 horizontal lines and 10 vertical lines how many rectangles?