extend previous knowledge of triangles and their properties to include the sum of angles of a triangle, the relationship between the lengths of sides and measures of angles in a triangle, and determining when three lengths form a triangle;
Practice identifying the attributes of different 2D shapes with this 90-slide interactive PowerPoint.
A worksheet to reinforce your students' understanding of the angle sum of a triangle.
A poster outlining the angle sum of a triangle.
A poster depicting and explaining the four types of triangles.
2-D shapes and their names on one poster.