KS3 Maths Angles in a triangle animation
Last updated 04 June 2013, created 27 October 2011, viewed 1,967
Powerpoint suitable for KS2 and KS3 Maths: Shape, space and Measure / Geometry - Triangle properties. This animation shows how angles in a triangle lie and a straight line and therefore add up to 180.
I usually get students to test this out with their own card triangles and use this animations as a summary.