Here are some pages from my interactive notebook over classifying triangles. On the side, we put classify by sides next to the first three and classify by angles on the bottom four.

My resource class completed the following cut and paste chart over classifying triangles. They loved this and some found it challenging!

The following pages are newly created notebook pages over "The Triangle Inequality Theorem." Overall, I loved it and I felt that students understood it more this year than previous years. I will try it with my resource classes on Thursday to see how they do.

We normally complete the inquiry-based lesson over why the sum of the interior angles of a triangle equals 180 (that is what is to the left of our notes). We also complete an activity that shows why the two remote interior angles of a triangle is equal to the exterior angle. This is my rushed notebook... I will update this post of what is actually in student's notebook.

I introduce the following pages first before we jump into triangle congruence proofs.

**Here are some of the files from my triangles unit:**

**Classifying Triangles Foldable****Classifying Triangles Cut and Paste Chart****Triangle Inequality Theorem Foldable****Triangle Sum Theorem Examples****Exterior Angle Theorem Examples****Triangle Hints Page 1****Triangle Hints Page 2****Triangle Congruence Foldable**

**If I forgot to add a file, let me know and I can add it as soon as possible! If I made a typo, please let me know. Thank you to the readers who emailed me about the typos in the proofs book! :)**

Hey, I am so glad I came upon your site. You have some awesome, helpful, things. Do you mind to add the Congruent Triangle pages that you use before diving into proofs? Thanks!

ReplyDeleteHey Katrina, Great stuff! I intend to add this link it to a my HS Geometry TEKS livebinder if you do not mind.

ReplyDeleteThank you! I don't mind :)

DeleteCould you also add the left side documents for classifying triangles and triangle inequality theorem??

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ReplyDeleteThank you so much for this resource! It will help my kids so much!

ReplyDeleteOut of curiosity, what program do you use to create all your notebook pages? I would love to be able to create some of my own.

ReplyDeleteThank you so much for creating all this amazing stuff! Do you have the files on congruent triangles available? I checked above but none of those were it. Thanks!

ReplyDeleteCan you please post the pink Congruent triangle page, the congruent triangles with algebra page, and the reference page? I am teaching a Geometry Part 1 and this would be great for them.

ReplyDeleteCould you please post the pink congruent triangles foldable with the algebra examples? I would LOVE to use it! Thanks!

ReplyDeleteCould you please post the pink page with algebra examples?

ReplyDeleteLove all of your materials and can't wait to try them out! Thank you for being so generous with your foldables!

ReplyDeleteI would be interested in the green reference triangle congruence sheet and the gold steps with hints for proof writing. Thanks for the great foldables. My kids really like them too.

ReplyDeleteThere is a typo in the Triangle Sum Theorem examples. Should read Solve for the value of 'x' and then list not the list. I'm sure you already know this! Love your resources! Thanks so much for sharing! Can you post the information that is on the color paper as well?

ReplyDeleteCan you post the steps for triangle proofs? I love that sheet and would love to use it in my interactive notebooks this year!

ReplyDeleteDo you mind sharing the triangle congruence reference sheet?

ReplyDeleteI appreciate all the documents you put on your website. They are very helpful!!!