Grade 6 - Shape and Space
Standard 6.SS.3 - Identify similar and congruent figures.
Included Skills: Geometry
Demonstrate understanding of regular and irregular polygons including: • classifying types of triangles • comparing side lengths • comparing angle measures • differentiating between regular and irregular polygons • analyzing for congruence. • Observe examples of polygons, including triangles, found in situations relevant to self, family, or community and sort the polygons into irregular and regular polygons. • Analyze the types of triangles (scalene, isosceles, equilateral, right, obtuse, and acute) to determine which, if any, represent regular polygons. • Compare two regular polygons (using superimposing or measuring) to determine whether or not the two polygons are congruent. • Analyze a set of regular polygons and a set of irregular polygons to identify the characteristics of regular polygons. • Critique the following statement: "When viewed from different perspectives, the same triangle can be classified in different ways." • Draw and classify examples of different types of triangles (scalene, isosceles, equilateral, right, obtuse, and acute) and explain the reasoning. • Replicate a polygon in a different orientation and informally prove that the new polygon is congruent and explain the reasoning.