nonparallel lines
yes
Assuming that by opersit is meant opposite, the answer is NONPARALLEL LINES. If they are in the same plane then (and only then) they would be intersecting lines (lines that meet at some point in the plane). But if they are not in the same plane they need not meet even if they are not parallel. So the answer that they are intersecting lines is incomplete and therefore incorrect. To visualise nonparallel lines that do not intersect, consider a room. Think of the [horizontal] line formed by the floor and the wall opposite you. Think of the [vertical] line formed by the wall behind you and the wall to your right. These two lines are not parallel, but they will not meet - ever.
A trapezoid is a quadrilateral having two and only two parallel sides, which are the bases of the trapezoid; the legs are its nonparallel sides.
It is a trapezoid. If the 2 nonparallel sides are congruent, then it is an isosceles trapezoid.
nonparallel lines
they intersect at some point
yes
a point
No--skew lines are nonparallel lines that still do not intersect (in three dimensions or higher).
Skew lines are nonintersecting, nonparallel lines - in other words, lines that aren't part of the same plane.
No. If they are parallel, then a plane exists which both lines lie in. Skew lines can not be on the same plane.
Assuming that by opersit is meant opposite, the answer is NONPARALLEL LINES. If they are in the same plane then (and only then) they would be intersecting lines (lines that meet at some point in the plane). But if they are not in the same plane they need not meet even if they are not parallel. So the answer that they are intersecting lines is incomplete and therefore incorrect. To visualise nonparallel lines that do not intersect, consider a room. Think of the [horizontal] line formed by the floor and the wall opposite you. Think of the [vertical] line formed by the wall behind you and the wall to your right. These two lines are not parallel, but they will not meet - ever.
A trapezoid is a quadrilateral having two and only two parallel sides, which are the bases of the trapezoid; the legs are its nonparallel sides.
A trapezoid with its nonparallel sides congruent is called an isosceles trapezoid.
It is a trapezoid. If the 2 nonparallel sides are congruent, then it is an isosceles trapezoid.
Two lines that are not parallel are perpendicular. The symbol is +.