To indicate that a pair of lines are parallel you mark them both with an arrow. If there is another pair of parallel lines on the same shape you mark those with a double arrow.
A trapezoid
I dont know the answer............................
The faces of a cube are all the same shape - a square.
Opposite faces.
A regular tetrahedron (triangular pyramid).
3d shape Well actually it is a Cube
a triangular pyramid.
Shape
Not exactly. They are two names for the same shape. The typical shape consists of a four-sides figure with opposite sides (and angles) equal. Each pair of parallel sides are the same length.
No. The sides of a shape don't need to be equal in length to be parallel.
yes