whatto line segments intersect but are not perpendicular
No
Yes they can.
Lines have no end (stretch on forever) Line segments start and end.
It can but need not.
whatto line segments intersect but are not perpendicular
Perpendicular line segments are line segments that intersect and make 90 degree angles.
Perpendicular line segments are line segments that cross with each other and form angles of 90 degrees.
if the triangle is a right angle it has 2 perpendicular line segments.
Adjacent sides of the flags of all nations are perpendicular line segments.
No
Yes they can.
A pair of perpendicular line segments is not shown among the pictures you've submitted.
Lines have no end (stretch on forever) Line segments start and end.
They are perpendicular line segments
It can but need not.
Each of the eight line segments is perpendicular to 2 line segments. So there are 8 pair in all.