Anticipated misconceptions Students may think that Triangle F is a scaled copy because just like the 3-4-5 triangle, the sides are also three consecutive whole numbers. Point out that corresponding angles are not equal. Are you ready for more? Choose one of the triangles that is not a scaled copy of Triangle O. Describe how you could change at least one side to make a scaled copy, while leaving at least one side unchanged. Possible Responses Answers vary. Sample response: on Triangle F, the side of length 7 could be extended to have length 10. Lesson Synthesis (5 minutes) What do we mean by corresponding parts? What is a scale factor, and how does it work? 2.4: Comparing Polygons and (Cool-down, 5 minutes) Setup: None. Student task statement Polygon is a scaled copy of polygon . Name the angle in the scaled copy that corresponds to angle . Name the segment in the scaled copy that corresponds to segment . What is the scale factor from polygon to polygon ? Possible responses Angle Segment (or equivalent) Wednesday 8/22: Standards:
Anticipated misconceptions Students may think that Triangle F is a scaled copy because just like the 3-4-5 triangle, the sides are also three consecutive whole numbers. Point out that corresponding angles are not equal. Are you ready for more? Choose one of the triangles that is not a scaled copy of Triangle O. Describe how you could change at least one side to make a scaled copy, while leaving at least one side unchanged. Possible Responses Answers vary. Sample response: on Triangle F, the side of length 7 could be extended to have length 10. Lesson Synthesis (5 minutes) What do we mean by corresponding parts? What is a scale factor, and how does it work? 2.4: Comparing Polygons and (Cool-down, 5 minutes) Setup: None. Student task statement Polygon is a scaled copy of polygon . Name the angle in the scaled copy that corresponds to angle . Name the segment in the scaled copy that corresponds to segment . What is the scale factor from polygon to polygon ? Possible responses Angle Segment (or equivalent) Wednesday 8/22: Standards: