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!

Exploring Characteristics of Triangles

Students draw triangles and explore the classification of each using the measures of interior angles and lengths of sides. They investigate the sum of the interior angles of various triangles and conjecture and prove the theorem: The sum of the interior angles in a triangle is 180?

3 Views 24 Downloads
Resource Details

Grade
9th - 11th
Subjects
Math
1 more...
Resource Type
Lesson Plans
Duration
45 mins
Instructional Strategy
Skills Practice
Included Materials
  • Project