any rhombus
A parallelogram
It can have anywhere between 0 and 12 pairs of parallel sides.
The shape of this molecule is Trigonal Planar. this is because it has no lone pairs of electrons so it maintains a 2D shape.
a regular hexagon
rhombus
Lines that form a 90 degree angle at their vertex. Two lines that make a 90 degree are perpendicular.
any rhombus
A 2d shape with uncountable lines of symmetry is a circle.
If the angle formed between the intersecting lines are 90o then the two lines are perpendicular. In 2D coordinate geometry, a perpendicular line has a slope equal to the negative reciprocal of the original line.
Hdhdhd
A parallelogram
It can have anywhere between 0 and 12 pairs of parallel sides.
rhombus
The shape of this molecule is Trigonal Planar. this is because it has no lone pairs of electrons so it maintains a 2D shape.
a regular hexagon
it is 90