GRADE 7 MATHEMATICS (7.6) Geometry and spatial reasoning. The student compares and classifies shapes and solids using geometric vocabulary and properties. The student is expected to: (D) use critical attributes to define similarity.
Sketch and label 2 other triangles that would be similar to triangle ABC and justify your sketches. Sketch 2 triangles that would not be similar to triangle ABC and justify your sketches. C 6
9
A
B
12
Similar Triangles: Sketch 1:
Justification:
Sketch 2:
Justification:
Triangles that are not similar: Sketch 1:
Justification:
Sketch 2:
Justification:
1. What mathematical concepts and vocabulary do I need to know to be able to work this problem? 2. Will the Grade 7 Mathematics Formula Chart be helpful on this problem? Why or why not? 3. Will a picture or diagram be helpful on this problem? If so, how?
4. What problem-solving strategy or strategies will I use to help solve this problem? 5. Extension (7.6D): What is the scale factor you used to create the first triangle that is similar to the given triangle? TEKSING TOWARD TAKS Š 2006
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