Use Google sketchup to see 2D planes in 3D shapes and make 3D trigonometry a little bit easier!This activity uses the "Free" and "Powerful" Google sketchup application to aid the visualisation of 3D geometry problems. The third dimension can really make problems more confusing and it is a really important skill to be able to see 2 dimensional planes within a 3 dimensional diagram. Then it can easily be seen that 3D trigonometry...

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