this post was submitted on 21 Sep 2024
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Kinda forgot the sides being parallel part. Like missing a step in assembling IKEA furniture, its not gonna turn out right.
You don't normally need to specify that the sides are parallel if you specify four right angles.
Also pretty sure definition of a shape requires only one enclosed or contiguous area.
This one is enclosed and contiguous though, the lines of the triangle end where the circular line starts. (The rest is just a drafting residue.)
No, it is 2 contiguous regions. The line of separation is the bounding line of a "shape."
Otherwise, the entire whitespace outside of the region is also part of the shape, as is anything it touches.
OK, imagine the space outside of the shape is black, or see through or whatever.
Well then the line of separation means nothing and then you've lost two right angles to the contiguous void.
Why? Does a cube floating in the void not have angles?
Without a distinction of where the cube begins or ends it does not because there is no cube and there are no angles.
Fun fact - there are no actual cubes anywhere in the universe. All geometric shapes are an abstraction. There are no cubes and no angles, so that checks out.
Ceci n'est pas une cube.
un* cube
The cube begins where the void ends and ends where the void begins.
The angle of the triangle that protrudes into the circular part is not a right angle.
My apologies you're correct, you lose two right angles.
Those arc sides are parallel in polar coordinates.