Students will practice classifying triangles by angles given the three side lengths with this set of 20 task cards. First, they must determine if the given sides could represent a triangle using the Triangle Inequality Theorem. If they do, they will classify the triangle further as acute, right, or obtuse using the converse of the Pythagorean Theorem. This activity was designed for a high school level geometry class

A recording worksheet is included for students to show their work and record their answers. They can check their answers by scanning the QR code on each card. Connection to the internet is not required to scan the code. However, a QR scanner app is required on the device. There are several free apps available to download.

If you haven’t used QR codes in your classroom yet, I highly recommend them! Students love using the technology, and the self-checking makes it easier on the teacher!

A version without QR codes is included as well.

###### This resource is included in the following bundle(s):

**Geometry Curriculum (with Activities)
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**Geometry Activities Bundle**

###### License Terms:

This purchase includes a single **non-transferable license,** meaning it is for one teacher only for personal use in their classroom and can not be passed from one teacher to another. No part of this resource is to be shared with colleagues or used by an entire grade level, school, or district without purchasing the proper number of licenses. **A t****ransferable license is not available for this resource.
**

###### Copyright Terms:

No part of this resource may be uploaded to the internet in any form, including classroom/personal websites or network drives, unless the site is password protected and can only be accessed by students.