# Tagged Questions

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7k views

### What do you call a cylinder with a hole down the center?

Imagine a 3D cylinder, like a can. Now imagine that almost like an axle spot for a wheel, there's a hole shaped in a perfect circle going down the cylinder. That's the shape I have to figure out the ...
1k views

### What are the proper terms for these star shapes?

Both figures are star pentagrams. But as you can see, the shapes are different due to the degree in the angles. Are there proper terms for these two shapes? I find myself having a hard time describing ...
285 views

### What's the word for the small square indicating a right angle in a geometric figure?

I'm talking about something in geometry notation and/or drafting, I think. It's the mini right-angle shape you can draw within an angle to indicate that it's ninety degrees. E.g., the mark denoting ...
519 views

### The shape of lightning

Is there any word to describe something that has lightning/tree/vein like structure? Edit: I forgot to mention that I'd prefer a word that emphasizes the random nature of these structures. Otherwise ...
127 views

### How to call the two distinct points on a heart-shaped curve

A heart shape as it is usually drawn (♥) consists of two smooth curve segments which join at two points, one at the top and one at the bottom. What is the most concise way to refer to these points? I ...
92 views

### What will you call this octagonal shape?

Let's say that this image (assume if it has eight sides, if not already)- is placed on top of this image (an octagonal prism) - What will the resulting shape be called ?
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### How to name the diagonals of a square so one can be told from the other?

A square has two diagonals, so how can I to name the separate diagonals if I want to distinguish one from another? I mean something like the up to down diagonal and the down to up diagonal. Do you ...
212 views

### What do you call the intersection of a rectangle and a circle?

The intersection of two rectangles is called a corner, but is there a word for the intersection of a rectangle and a circle? Is it still a corner? This picture I made probably explains it better: (...
510 views

### Noun for for u-shaped bend on electrical component's pin (wire) to aid in placement (Beading / Ribbing / Crimp)?

I'm trying to find the correct noun for a u-shaped bend in an electrical component's pin. Is there a generic technical term that may usually refer to a deformation to reinforce e.g. an (angle) bracket ...
657 views

### Is there a name for the “3d” version of a crescent shape?

Is there a name for the "3d" version of a crescent shape, like there for square (cube), circle (cylinder) etc. Can I call it a "crescent prism" - is this a valid term for it?