e2 Effective Educators
Home
Testimonials
ACT Subject Tests
Import 419
More
Determine Triangle Types
CONCEPTS
Tips
• 2 side length must be greater than 3rd side to make a triangle
Determine triangle type using the Pythagorean Theorem
• a² + b² = c² => right triangle
• a² + b² > c² => obtuse triangle
• a² + b² < c² => acute triangle
ACT PRACTICE PROBLEMS