apparently, it is called catenoid.
cylinder
An equilateral triangle; the sides are the same length and angle so its the same irrespective of how you tilt it.
You don't rotate the angle, you rotate an object by that angle, for example if you had to rotate something 180o it would flip over.
The letter H has an order of rotational symmetry of 2. This means that if you rotate the letter 180 degrees, it looks the same as it did in its original position. Additionally, it has symmetry about a vertical axis, so it can also be reflected and still appear unchanged.
You can rotate it through any angle of your choosing.
How to rotate a vertical shot to horizontal after shooting
Yes, in a centrifuge
Because its formed on its axis differently
Bad Motor Start Capacitor
it is Venus.
No, but if you rotate the console from vertical to horizontal while playing a game you will scratch it, badly. I learned the hard way, the very same day I got my xbox.
cylinder
Arguable:1. Simple - Just rotate2. Complex - If you consider the wheel as a particle on the surface of earth - Both rotate and revolve
I don not know
To make a paper fan rotate, you can blow on it or place it in front of a fan or air current. The air flow will create a pressure difference on the fan's surface, causing it to rotate.
A simple windmill consists of a vertical post with two rotating hubs - one vertical, one horizontal - attached at the top. Each hub is attached to the other, allowing the windmill to rotate horizontally and point into the wind. The vertical hub has slats attached radially to it, each one at a slight angle. As the wind passes over the slats, the Bernoulli principle (high pressure/low pressure) causes the vertical hub to rotate. By itself, a windmill is just decorative, but if big enough, it can be used to rotate grist stones in mills, run pumps, etc.
In order to know how to rotate texts to horizontal automatically by double click when editing vertical or slants texts, it will depend upon which word processing program you are using. If you are using Word Perfect, you just need to go to the formatting feature inside the table feature.