Understanding Lines in 3D Geometry

The shape is too simple.

The shape is too small.

The shape is not colorful.

The shape is viewed from multiple sides.

A cone

A pyramid

A tissue box

A sphere

They are always curved.

They never intersect.

They are always perpendicular.

They intersect at one point.

Lines that never intersect.

Lines that meet at a corner.

Lines that are diagonal.

Lines that are perpendicular.

They never intersect.

They are always perpendicular.

They intersect at one point.

They are always curved.

Lines that are skew.

Lines that are parallel.

Lines that share an endpoint.

Lines that never meet.

By checking for lines that are curved.

By identifying lines that are skew.

By looking for lines that are parallel.

By finding lines that share an endpoint.

They intersect at a point.

They are always horizontal.

They appear to intersect in 2D but do not in 3D.

They are parallel.

As intersecting lines.

As curved lines.

As dotted lines.

As parallel lines.

They are always visible.

They are always vertical.

They never appear in 2D.

They do not actually intersect.