Rotations In Real Life:
- There are a copious amount of examples portrayed in real life about rotations. Basic examples of rotations in life include the earth. The earth is constantly rotating none the less causing the change in day to night and so on. The earth rotates around a point, also known as the axis. This portrays itself very well and basic in Geometry.
- The human body itself rotates as individuals twist and turn.
- In nature tornado's rotate in a circular motion and destroy everything in its path.
- Tires rotate on vehicles all the time and if your a guy you would know this
- Fans rotate all the time as well! This is how they produce the fresh air they give out!
- Anything can be rotated as well none the less. This can include mirror images, images, etc. Rotation is seen everywhere and is not just a mathematical term!
Fans rotate
During a point in history, all continents of the world were all one big continent. Over the years the world shifted and things changed.
Tires rotate on vehicles all the time and if your
a guy you would know this.
a guy you would know this.
A tornado is a rotation.
People playing twister is an example of a rotation.
Geometry:
- A rotation is a transformation in a plane or in a space that explains the rigid body around a fixed point
- In the bottom image rotation is seen of an object in two dimensions around a point.
The rotors on a helicopter rotate.
You can rotate across an axis like in this photo and at a certain degree.
- Rotations appears in Linear Algebra as well and is not only portrayed in Geometry.
- Rotations are done counter clockwise obviously.
- The most common are 90 degrees or 180 degrees but you can rotate at any degree measure.
- Rotation notation is usually denoted R(center , degrees)
- Rotation by 90° about the origin: R(origin, 90°)
- Rotation by 180° about the origin: R(origin, 180°)
- Rotation by 270° about the origin: R(origin, 270°)
This is a 180 degree rotation
When you rotate points the point has to stay the same distance away from the middle of the coordinate plane.