The classifying triangles guided notes set introduce 6 main classifications of triangles by sides and angles as well as some properties of equilateral and isosceles triangles. Vocabulary includes: acute triangle, obtuse triangle, right triangle, equilateral triangle, equiangular triangle, isosceles triangles, and scalene triangles. The notes also discuss the base angles of isosceles triangles and the triangle angle sum theorem. This notes are a great introduction to a high school Geometry congruent triangle unit. The first 1.5 pages would be a great introduction/review for younger grades, but the last half page does have a couple of problems involving solving algebra equations for missing sides or angles in the triangles based on their properties.

The scaffolded notes provide an extra opportunity to keep students engaged and provide them with valuable foundations for the concepts we will discuss in Geometry. There is one page of guided notes with examples followed by a second page that could be used as extra class examples or a worksheet. Two answer keys are included (one without examples filled in for classroom teaching purposes and a full answer key).