Elementary Geometry - Seven Triangles of Reality

Early this week, my little one worked on seven types of triangles that exist.  We started with the three types of triangles based on sides – equilateral, isosceles, and scalene.  She constructed the triangles using geometry sticks. (Geometry stick material is really expensive and I cut these strips from foam).

She learned about angles and degrees a few weeks ago.  We reviewed it, made some triangles and identified the angles in the triangles- obtuse, right and acute angles.

 Then I told her to try all the possible combinations of equilateral, isosceles, and scalene and obtuse, right and acute angles. She tried on her own, found the possible combinations and labeled them.

She labeled these blue triangles as a practice.