Answered By: Marg Mannseichner Last Updated: Jul 17, 2017 Views: 12
Yes, the 3 angles on on a triangle, always add up to 180 degrees. I've always thought that was cool!
I found this site about angles on the VLC, grade 6 math guide under Geometry. It has a neat little demonstration tool.
I also found this site on how to use a protractor to measure angles, under Grade 5 Math - Geometry:
(Be sure to watch the video demonstration and try the practice feature!)
Finally....here is a good YouTube video about measuring angles. The first half of the video is a good for getting the idea of how to measure basic angles like you would find in a triangle, the second half of the video, shows how to do more difficult measurements.