A trapezoid has 1 set of parallel lines
Not sure how you can have only one parallel side. What is it parallel to?
line
well... i hav no idea!
A 1 dimensional shape is a line.
a 2 sided shape is real but a 1 sided shape is not
a heart
Trapezium
1
the shape is a heart.
A vertical line
A Heart or a Triangle.
it behaves like a line