Can you complete the missing angles in this interactive worksheet from Transum?

To see why angles in a triangle add up to 180 degrees see this demo.

Feb 172012

Can you complete the missing angles in this interactive worksheet from Transum?

To see why angles in a triangle add up to 180 degrees see this demo.

Jan 092012

This very neat animation shows why angles in a triangle always add up to 180 degrees.

http://www.echalk.co.uk/Maths/triangle/angleSum.html

Have a go at working out the missing angles in these triangles.