perpendiculars
("Opposite" is a pretty arbitrary condition in math. The slopes are negative reciprocals.)
and by negative that person means the opposite of what it is already, negative or positive, it's not always negative
perpendicular.
The lines that connect places in the environment with the same altitude are called contour lines. These lines are often found on topographic maps and are used to represent elevation and the shape of the terrain. Contour lines help illustrate the steepness of slopes and can indicate features such as hills, valleys, and plateaus.
fault
Parallel lines can have a line crossing both of them. They call that the transversal. Corresponding angles are on the same side of the transversal. Alternate are on opposite sides of the transversal.
Opposite sign? Additive inverse.
Vertically opposite.
perpendicular.
It is a trapezoid that has only one pair of opposite parallel lines of different lengths.
When two lines cross each other they form vertical equal opposite angles
fault
An incoming call
Parallel lines can have a line crossing both of them. They call that the transversal. Corresponding angles are on the same side of the transversal. Alternate are on opposite sides of the transversal.
intersecting lines
The number you are referring to is called the reciprocal of 1. When a number is divided by 1, the result is the same number, so the reciprocal of 1 is also 1. In mathematical terms, the reciprocal of a number x is denoted as 1/x.
If the question means, "What do you call the point where two lines cross?" The answer would be "intersection". Otherwise, I would call them 2 intersecting lines.
Opposite sign? Additive inverse.
when you flip the numerator and denominator you call it the reciprocal. hope it helped.