Introduce Triangles

  1. Introduce isosceles triangles and theorems (isosceles triangle theorem and converse).  Show students how to use theorems to support one another. Introduce equilateral triangles and properties. Topics include:
    Corresponding Parts of Congruent Triangles Are Congruent
    Isosceles and Equilateral Triangles
    Perpendicular and Angle Bisectors
  2. Return graded floor plans and prepare for models.

Tips and Tools

Use this Khan Academy video on the properties of triangles. (10 minutes)

Teams should decide on and plan for creating the model house. How will they build it? Do they need a materials list?