Table of Contents

## How do you rotate a point in degrees?

Click on the point A (the point that we are going to rotate), then on point B (the center of rotation). A dialog box will appear where you can enter the angle of rotation in degrees. You can also specify whether the rotation is to be counterclockwise (the default) or clockwise.

## How do you rotate 180 degrees around a point?

180 Degree Rotation When rotating a point 180 degrees counterclockwise about the origin our point A(x,y) becomes A'(-x,-y). So all we do is make both x and y negative.

**How do you rotate a point 30 degrees?**

Draw a circle and trace it with a pencil counter-clockwise.

- Every time that you trace the whole circle you have rotated your starting point 360 degrees.
- If you only go a quarter circle then you have rotated 90 degrees.
- For a 30 degree rotation you have to only rotate a third of a quarter around.

**What is the formula for rotating 90 degrees clockwise?**

The rule for a rotation by 90° about the origin is (x,y)→(−y,x) .

### What is the rule for a 90 degree clockwise rotation?

Rule : When we rotate a figure of 90 degrees clockwise, each point of the given figure has to be changed from (x, y) to (y, -x) and graph the rotated figure. Let us look at some examples to understand how 90 degree clockwise rotation can be done on a figure.

### What are the rules for rotation?

Unless otherwise specified, a positive rotation is counterclockwise, and a negative rotation is clockwise. Use the interactive below to explore how 90°, 180°, and 270° rotations are related to the x coordinates and y coordinates of a point.

**What are the rules for clockwise rotations?**

Terms in this set (9)

- (-y, x) 90 degree rotation counterclockwise around the origin.
- (y, -x) 90 degree rotation clockwise about the origin.
- (-x, -y) 180 degree rotation clockwise and counterclockwise about the origin.
- (-y, x) 270 degree rotation clockwise about the origin.
- (y, -x)
- (x, -y)
- (-x, y)
- (y, x)

**What effect will a 90 degree clockwise rotation have on a triangle?**

This rotation changes the position of the triangle (see attached diagram), doesn’t change lengths of the sides, doesn’t change angles (because the rotation is the rigid transformation).

#### What are the coordinates of GH and I after a rotation about 0 0 by 90 degrees clockwise?

These points on rotating 90° clockwise about ( 0,0 ). Solution : Rotation of point ( h,k ) about (0,0) by 90° clockwise is ( k,-h ) . I’ is ( -2,-3 ) .

#### Is a 90 degree rotation clockwise or counterclockwise?

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

**Is clockwise left or right?**

Clockwise is spinning in the direction of an analog clock. It is a way to describe circular motion. Left or Right turns are ways of describing a change in approach. Clockwise is constantly turning to the right.

**Is clockwise tighten or loose?**

The easiest way to remember which direction tightens and which one loosens is the old axiom “righty-tighty and lefty-loosey.” This means that turning most threaded things right, or clockwise, tightens them (righty-tighty) and turning them to the left, or counterclockwise, loosens them (lefty-loosey).

## Why do clocks turn clockwise?

The reason that clocks turn clockwise has to do with sundials, which were the first clocks. In the northern hemisphere, the earth rotates counter-clockwise, which means that from our point of view the sun appears to move across the sky in a clockwise directon.

## Is it always righty tighty lefty loosey?

Well, for circular fittings, it is always true. The difference between left and right hand threads would be which ‘side’ you’re looking at when you say the phrase. If you’re loosening a left-handed thread, the ‘bottom’ of the thing you are turning is moving to the left.

**Which way do you turn a wrench to loosen it?**

- To fasten, socket must turn clockwise.
- To loosen, socket must turn counter clockwise.
- For how to use a ratchet on newer wrenches, use the directional change feature to tighten or loosen.

**Should you push or pull a wrench?**

Always pull, rather than push, a wrench for greater control and balance. That way, if the nut or bolt should suddenly loosen, you’re less likely to go flying. Never try to get more torque from a wrench by using a cheater bar or other device to extend the leverage.

### Which tool is used to loosen or tighten crosshead screws?

Answer. Explanation: Phillips Head Screwdriver -used to loosen or tighten cross-head screws.

### Does wd40 loosen bolts?

If the bolt is stuck in place because of rust, you can use a bolt loosening spray such as WD-40 Penetrant Spray. This penetrating oil provides deep lubrication to loosen the nut or screw.

**How do you release a stuck nut?**

Try a 6-point wrench or socket on your seized nut/bolt. Start by rocking the bolt by tightening then loosing, this may be all you need to break through the rust. Try and avoid 12-point wrenches and sockets as they likely to slip and strip the bolt head.

**Does wd40 loosen metal?**

WD-40 is designed to loosen the bonds between rust and the metal surface it has adhered to by penetrating the porous layer of rust and using its lubricating properties to loosen it.

#### What is the best penetrating oil?

Comparison of best penetrating oil for cars in 2020

Penetrating oil | Product Name | Price |
---|---|---|

Best overall penetrating oil | Kroil | $17 |

Best spray-can penetrating oil | PB B’laster | $10 |

Best value-priced penetrating oil | Liquid Wrench | $4 |

Best fast-acting penetrating oil | Knock’er Loose Plus | $10 |

#### Is PB Blaster better than WD40?

If you want something economical and easy to use that will help you use rusted and corroded car parts again, WD-40 will work well enough for your needs. But if you need something strong that leaves a protective layer for years and penetrates even better – then PB Blaster is your best choice.

**Is Kroil better than WD40?**

Kroil is a phenomenal penetrate, where WD-40 doesn’t do so well. ^^^^^ THIS^^^^^^^ ….. plus Kroil has much better anti-rust properties. I use WD40 in my toilet bowl for cleaning & long-lasting porcelain film also in the top-tank for lubrication (all-plastic there and will not rust).

**Is Liquid Wrench better than WD40?**

Although WD-40 only uses a single multi-use formula (unlike other brands, including Liquid Wrench, that create specific formulas), it’s highly effective no matter the task at hand. It works just as well for cleaning, degreasing, and preventing rust as it does at penetrating rusted metal objects to help you loosen then.

## What works better Liquid Wrench?

But despite the effectiveness of both brands, PB Blaster edges out Liquid Wrench by a hair. As one of the best-selling brands since its inception in 1957, PB Blaster not only has history on its side, but incredible performance as well. Simply put, this penetrating oil works great.

## What works better than WD40?

If you say “what can I use instead of wd40”, it is better to use products like PB Blaster or Liquid Wrench to break up rusted, frozen, and stuck nuts and bolts, and other rusted machinery.