So a complex rectangle is a rectangle with all 4 corners detached ?
so like this
_____
I I
_____
No, it is a self-intersecting polygon whose vertices lie on a simple rectangle. Like this:
______
\ /
\ /
X
/ \
/____\
Note that the vertices lie on a rectangle (the point of intersection in the middle isn't a vertex, just a point where the edges of the rectangle intersect.
Essentially, the vertices define the rectangle. Whether you connect them simply (with non-intersecting line segments) or non-simply (with intersecting line segments) determines whether or not it is a simple rectangle.
oh I get it now. But when would you ever come across the practical application of a complex rectangle, or is it an imaginary shape? like how you can't square root negatives unless it equals i.
The way I used "complex" here, I did not mean complex numbers (which include the imaginary numbers), but merely shapes which are not concave or convex. This terminology is not universal (some people might have other words for this shape.). However, when I said "complex" rectangle, I meant a shape that actually isn't that complicated--it was exactly what I drew in my gorgeous ASCII art. You probably usually think of that shape as two triangles, rather than one rectangle, but it can be described either way.
I see, so if it's not imaginary, then I can walk aong the street and see a street sign with 2 connected triangles and say "look, a complex rectangle! ahh... perfectly charaterised by its self-intersecting sides and stagnant vertices"
So can you have complex triangles or circles? And does this apply only for 2D or for 3D as well?
So a complex rectangle is a rectangle with all 4 corners detached ?
so like this
_____
I I
_____
No, it is a self-intersecting polygon whose vertices lie on a simple rectangle. Like this:
______
\ /
\ /
X
/ \
/____\
Note that the vertices lie on a rectangle (the point of intersection in the middle isn't a vertex, just a point where the edges of the rectangle intersect.
Essentially, the vertices define the rectangle. Whether you connect them simply (with non-intersecting line segments) or non-simply (with intersecting line segments) determines whether or not it is a simple rectangle.
oh I get it now. But when would you ever come across the practical application of a complex rectangle, or is it an imaginary shape? like how you can't square root negatives unless it equals i.
The way I used "complex" here, I did not mean complex numbers (which include the imaginary numbers), but merely shapes which are not concave or convex. This terminology is not universal (some people might have other words for this shape.). However, when I said "complex" rectangle, I meant a shape that actually isn't that complicated--it was exactly what I drew in my gorgeous ASCII art. You probably usually think of that shape as two triangles, rather than one rectangle, but it can be described either way.