Introduction
Hello class today we are learning to classify triangles.
Let's first review some Vocabulary:
Angle; side; degree; acute angle; right angle; obtuse angle; straight angle; line; parallel
Task
Triangles are polygons that have 3 sides, and 3 angles.
There are three special names given to triangles that tell how many sides (or angles) are equal.
There can be 3, 2 or no equal sides/angles:
3 equal sides and angles is called Equilateral 
2 equal sides and angles is called Isosceles 
3 No equal sides and angles is called 
Process
Watch the following video to review how to classify triangles
Evaluation
Your exit ticket is to write down the answers from the following worksheet:
Check your accuracy:
1-3 correct - limited understanding of the content
4-6 correct - Partial understanding of the content
7-9 correct - Reasonable understanding of the content
10-12 correct - Full and complete understanding of the content
Conclusion
Congratulations! Now you know a lot about triangles!
Triangles are everywhere. Check around you, how many triangles can you see?
Credits
Video from Youtube and created by using Powtoon, Dec 2, 2014 - Uploaded by CI350 Class
Worksheet from https://www.mathworksheets4kids.com/
Triangle funny picture from www.funnycaptions.com
Triangle shapes by Clip Art Etc