Hi, I have a series of videos on perspective. Probably the easiest way to see them in order is via the resourses page I have set up for my students. I hope it helps. Good Day. www.gmitletterfrackresourcecentre.com/techncial-graphics.html

Thank you, I usually draw the 3d images in solidworks (but any 3d drawing package would work), I save out the basic lines without colour as a dxf file. Then I open it in Autocad where I tidy it up by deleting any overlapping lines. I also draw the 2D lines. Once the lines are drawn I export them out as a. wmf file which I open up in Microsoft PowerPoint using insert picture. If you right click on the image and select ungroup it will as you to convert the file, select yes then all the lines become individual lines which are nice and smooth. If you ungroup them a second time you can animate them individually. I add colour by drawing shapes being the lines.

I'm afraid to say that the typos are all mine. I work in GMIT so will sometimes upload videos to the official website too. For a more concise series of the Graphic videos check out our website www.gmitletterfrackresourcecentre.com That could be our tag line 'Looking for geometry and typos, look no further' 😂

Hi Seth, the answer to your questions is yes and no. Yes in so far as you can visualise the orthographic views as either rotations or as different camera viewpoints (I personally like to visualise a bundle of security monitors stacked ontop of each other). No in so far as both analogies can be used for either 1st or 3rd angle. If you take the monitor idea, you could arrange the monitors so that the monitor for the plan view is stacked on top of the front view monitor (resulting in a 3rd angle convention) or below it (resulting in a 1st angle convention) likewise the side view monitors could be swooped around to fit either convention. The same can be said for the hinging analogy. If you imagine the object stuck to a trapdoor which can hinge either from the front or back. If the trapdoor hinges from the back the top will tip down and end up facing you (resulting in a 1st angle convention). If the trapdoor hinges from the front, the underside of the object will kick out and end up facing you (a 3rd angle convention). It all depends on the position of the hinge, in front of the box for 3rd angle and behind the box for 1st angle.

@@thomassheppard5369 This is awesome! Very well worded. I am investigating this because I want to give my Geometry students some industry perspective on orthography. I do find 3rd angle easier to visualize. I think it's what I'm accustomed to.

For set perspective questions it isn't really determined rather its given as part of the question. Sometimes the spectator height isnt given but instead the height of the horizon line is specified which is just a way to throw students off as they are always the same height. If you are creating your own perspective image (not a set question) you can pick your own height to suit which part of the object is most important to you, a spectator height taller than the object will allow you to see more of the top of the object whereas a spectator height around the middle of the object will focus on the front. Try and match your spectator height to where you would normally view the object from e.g if you are drawing a building then you'd expect the spectator height to be quite low to the building as normally you'd view the building from the ground, if you want a birds eye view then the spectator height would be higher than the building placing you above it. Hooe this helps.

@@thomassheppard5369 means a lot, THANK YOU!! Hoping u have a good day ☀️