Lesson: Pythagorean Inequality Theorem Mathematics • Second Year of Preparatory School

Students will be able to

• understand that in a triangle with vertices , , and , if
  • , then is a right angle,
  • , then is an obtuse angle,
  • , then is an acute angle,
• determine the type of a triangle (acute, right, or obtuse) by using the Pythagorean inequality theorem, which involves identifying first the greatest angle in the triangle given its side lengths,
• solve geometry problems using the Pythagorean inequality theorem.