Opposite sides.
Vertex!! =)
vertex
the vertex is the common endpoint
An angle consists of two rays called sides with a common endpoint called the vertex.
point of intersection of the sides of the angle; the vertex
Vertex
Parallel sides, non-adjacent sides, skew sides in 3-d shapes.
An angle consists of two rays called sides with a common endpoint called the vertex.
That's an irregular quadrilateral.
angle: vertex
Yes.