Addition sign or plus sign
Although, the original question worded as "What_is_two_lines_cross_at_90_degrees," could be interpreted to be asking about perpendicular lines.
Lines that cross each other at 90 degrees are perpendicular lines.
The symbol of a cross with lines through it represents the concept of negation or rejection. It is commonly used to indicate that something is not allowed or prohibited.
Intersecting lines can cross at any angle. Perpendicular lines cross or meet at 90 degrees only.
Not only that; to be "perpendicular", they have to cross at an angle of 90 degrees.
Ghana
Yes at right angles which is 90 degrees
Anghola
Anghola
They both cross paths. Intersecting lines can cross paths in any ways, but perpendicular lines have to cross at 90 degrees.
If they measure 90 degrees then they are perpendicular. Other than that they are just intersecting lines
Perpendicular lines are a specific kind of intersecting lines. Intersecting lines are any two lines that cross through each other. Depending on how they cross each other, they may make angles from 170 degrees to 1 degree. Perpendicular lines are specifically two straight lines that cross each other at right angles, so that they create angles that are 90 degrees.
The usual symbol for a pound Sterling had two cross lines when the amount was handwitten, but the keyboards of computers (and the modern banknotes) only use one cross line.