# What is the rule for positive rotation?

## What is the rule for positive rotation?

counterclockwise
If the degrees are positive, the rotation is performed counterclockwise; if they are negative, the rotation is clockwise. The figure will not change size or shape, but, unlike a translation, will change direction.

### What is the rule for the rotation?

Here are the rotation rules: 90° clockwise rotation: (x,y) becomes (y,-x) 90° counterclockwise rotation: (x,y) becomes (y,x) 180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y) 270° clockwise rotation: (x,y) becomes (-y,x)

Is clockwise rotation negative or positive?

This rule says that if your right hand grasps a rod that is turning in the direction indicated by the fingers, then the thumb when pointed along the axis of the rod gives the orientation of the axis of rotation. This is positive for counterclockwise rotation (as viewed from above) and hence negative for clockwise.

Is positive 90 degree rotation clockwise?

Since the rotation is 90 degrees, you will rotating the point in a clockwise direction.

## What is exactly 1/4 of a full rotation?

Teachers already introduce the general concept of revolutions (turns) when they say things like “a full circle is 360°”, but they can make the concept more numerically precise by saying “a full turn is 360°, a half turn is 180°, a quarter turn is 90°, and an eighth turn is 45°” or writing “1 rev = 360°, 1/2 rev = 180°.

### What are the rules of rotation in math?

Rotation Rules Explained w/ 16 Step-by-Step Examples! 1 Rotations About The Origin. When rotating a point 90 degrees counterclockwise about the origin our point A (x,y) becomes A’ (-y,x). 2 Composition of Transformations. 3 Rotational Symmetry. 4 Video – Lesson & Examples

What is the direction of rotation in physics?

These rotations are denoted by positive numbers. Clockwise rotations are denoted by negative numbers. Counterclockwise rotations are denoted by positive numbers. Note that the direction of rotation (CW or CCW) doesn’t matter for 180 and 360-degree rotations, since they will both bring you to the same spot (more on this later).

What happens when you rotate a point 90 degrees counterclockwise?

When rotating a point 90 degrees counterclockwise about the origin our point A (x,y) becomes A’ (-y,x). In other words, switch x and y and make y negative. 90 Counterclockwise Rotation 180 Degree Rotation

## What is the difference between 90 and 180 degree rotation?

When rotating a point 90 degrees counterclockwise about the origin our point A (x,y) becomes A’ (-y,x). In other words, switch x and y and make y negative. When rotating a point 180 degrees counterclockwise about the origin our point A (x,y) becomes A’ (-x,-y).

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