GEOM 2 | Lesson 2 : Triangle Inequality


Learning Intentions (Objectives)

  1. Students will use the Pythagorean Theorem to classify triangles and identify the characteristics of different types of triangles (acute, obtuse, isosceles, equilateral).
  2. Students will prove the Triangle Inequality Theorem.

Lesson Components

Standards Addressed in the Lesson

HSG.CO.C.10. Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.

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