Drawing Lines at the Right Angle

[david18]

For the first two parts of the question I simply used some symmetry to get the lines meeting the mirror at the correct angle. However for part c) whilst I know roughly what it should look like the angles aren't very accurate. Is there any simple method like the use of symmetry to draw lines at the right angle?

 

[Doc Al]

Here's a trick that might help you. A plane mirror produces an image of an object that is directly opposite the object and the same distance inside the mirror. Using that, you can immediately draw the location of the image of P inside mirror Y. Then that image acts as an object as far as mirror X is concerned--draw that second image inside mirror X.

See if that helps.

 

[thomate1]

I understand the importance of precision and accuracy in measurements and drawing. When it comes to drawing lines at the right angle, there are several methods that can be used to ensure accuracy.

One method is to use a protractor to measure and mark the desired angle before drawing the line. This is a simple and effective way to ensure the correct angle is achieved.

Another method is to use a T-square or a set square, which are tools specifically designed for drawing lines at right angles. These tools have a 90 degree angle built in, making it easy to draw lines at the correct angle.

Additionally, the use of a compass can also help in drawing lines at the right angle. By setting the compass to the desired angle, a perfect right angle can be achieved.

In some cases, using symmetry can also be a helpful technique. By folding a paper or using a mirror, you can create a mirror image of the desired angle, which can then be traced onto the paper.

Overall, the key to drawing lines at the right angle is to use the appropriate tools and techniques, and to ensure careful measurement and precision. With practice and attention to detail, accurate angles can be achieved in your drawings.