Angles in a Triangle

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

 

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Which Operation?

Which Operation?

Decide which mathematical operation is required then use it to find the answers. So far this activity has been accessed 95 times and 3 people have earned a Transum Trophy for completing it.

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 full-screen mode.

Angles in a Triangle

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

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