Angles in a triangle introduction

This lower KS3 PowerPoint can be used to introduce and practise finding angles in a triangle. 

Sections include:

Investigation - students discover what the angles in a triangle add up to. This includes an animated version of the task.

Practice - 12 questions for students to work through and a challenge question at the end.

The answers are included as well as a final question that can be used as an exit ticket or plenary.