A reminder of how to use the fact that the angles in a triangle sum to 180 degrees to find the size of unmarked angles in triangular diagrams

Teacher: Click the play button in the centre of the video screen above. In the bottom right corner of the video (when you cursor moves over the playing video) is a broken square button which opens fullscreen mode. Angles in a TriangleA reminder of how to use the fact that the angles in a triangle sum to 180 degrees to find the size of unmarked angles in triangular diagramsThere are plenty of other maths videos in the collection which are perfect when you need a change of focus. There are funny videos, instructional videos and videos that will inspire and motivate. Add this video to Google Classroom: 

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