8/20/2016 21 Comments
Geometry with Roof Trusses
I created some very nifty digital roof trusses for another resource the other day. I put so much effort into researching and building different truss styles, that I decided to share the images as clip art in case other people can use these in worksheets, etc.
They are great for real-world problem solving in so many areas, depending on what "given" parts you label:
- Triangle Sum Theorem
- Congruent & Similar Triangles & Quadrilaterals
- Quadrilateral Sums (& even pentagons)
- Angle Addition Postulate
- Supplementary Angles & Linear Pairs
- Diagrams within proofs
... and a lot more.
Just pop them on the page, and add some text boxes or symbols to create endless problem sets. These would be great on quizzes.
You can shrink/expand them to any size.
Here are the individual clipart files (as PNGs with invisible backgrounds). These image files are for personal or classroom use only, not for commercial use (You may not sell any resource with these images in it). Click each picture to download and save each image file:
Here is a worksheet I created as a missing-angle-measure puzzle.
Click the image to download the PDF file and answer key:
If you use this worksheet, after the great review of angle measures, properties of triangles, and supplementary angles, you can follow it up by asking students to classify the different triangles, identify pairs of similar and congruent triangles, and even discuss special right triangles.
I hope you and your students can use and enjoy these!
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9/22/2016 11:10:28 am
I really appreciate your generosity in sharing! Love the real world aspect of the roof angles. Thank you!!
9/22/2016 04:53:24 pm
Thanks so much, Cindy! :)
9/22/2016 11:52:12 am
Thanks for sharing!!!
9/22/2016 04:54:02 pm
No problem! Thanks so much, Janice! :)
9/22/2016 06:57:31 pm
I can't remember when I first came across your work but I am so glad that I did. I get excited when I see your entries in my email list and look forward to viewing your latest work. It is so obvious how passionate and committed you are to producing quality resources that engage your students and how much time and energy you put into some your amazing resources. Like so many others I really appreciate your generosity and willingness to share what you produce.
9/23/2016 08:10:53 am
9/25/2016 06:56:18 am
Thank you for sharing your wonderful ideas! I love how you make higher level mathematics engaging and hands on!
9/25/2016 06:41:47 pm
Thanks so much, Sandy!
9/25/2016 07:50:24 pm
Thank you so much for sharing. I use scissor jacks to explain a lot of concepts in Geometry.
9/26/2016 11:05:06 am
12/4/2016 03:07:53 pm
12/4/2016 04:17:04 pm
My wife and I have been looking for some roof trusses, and I think that some tips would be nice. I'm glad you talked about a few different trusses in your article, including a Howe truss. I'm going to have to look for a few good roof trusses and see what would be best for our job!
7/22/2019 03:53:21 pm
I LOVE THIS IDEA. I cannot WAIT to use this with my students!!!!! What a cool way to reimagine finding missing angles!
7/24/2019 02:21:02 pm
8/14/2020 07:45:16 am
I love this idea! It is a great way to use real world problems in Maths and I can link it to careers as well. Looking forward to using this with my pupils.
10/5/2020 11:44:39 pm
I was never aware that there are many different options to roof trusses. My brother and his friends are planning to build a house from scratch for the homeless. I will share this information with him so that he knows which trusses offer more stability.
5/31/2022 10:17:27 am
Thank you for explaining a bit about the geometry of roof trusses. I've been wondering about these since the trusses were put in our house this last week. I think this has helped me to understand how they work.
I never took into account the fact that one must identify the pairs of similar and congruent angles in trusses. This is definitely a real-life representation of geometry that students can appreciate. Actually, I came upon this article because I was looking for designs that I will choose from, so I'll just ask truss suppliers to give me an idea of the process instead for more accurate decision-making.
3/23/2023 01:23:09 am
With the right calculations, you can accurately design and construct a roof truss for your house quickly and easily. Geometry is an important tool in the process of creating a roof truss that can support the weight of your home.
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