Start a 10-Day Free Trial to Unlock the Full Review

Why Lesson Planet?

Find quality lesson planning resources, fast!
Share & remix collections to collaborate.
Organize your curriculum with collections. Easy!
Have time to be more creative & energetic with your students!

Sum of the angles of a triangle

Students prove that the sum of the interior angles of a triangle is 180 degrees. Students are introduced to Geometer's Sketchpad through a demonstration then try their hand at proving the interior angle's measurement.

3 Views 2 Downloads
Resource Details

Grade
7th - 8th
Subjects
21st Century Skills
3 more...
Resource Type
Lesson Plans
Instructional Strategy
Skills Practice
Technology
Ed Software