The roads are two lines and they intersect at 90° .
What is intersection of line?
Intersecting lines cross each other at some arbitrary angle .
What are perpendicular lines?
Two geometric objects are perpendicular if they intersect at a right angle. A line is said to be perpendicular to another line if the two lines intersect at a right angle.
According to the question
Roads have 2 lanes and have crossing lane .
Now,
Those roads are two lines and they intersect at a right angle by making 90° at there point of intersection .
So,
They are perpendicular lines .
Hence, the roads are two lines and they intersect at 90° .
To know more about intersection of line and perpendicular lines here:
https://brainly.com/question/18271653
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