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7th Grade Math / Lesson 6: Comparing Ratios

What will we be learning in this lesson?

  • In this lesson, you will learn look at comparing ratios of corresponding sides of shapes to determine if they are similar.

    Vocabulary words are found in this purple color throughout the lesson. Remember to put these in your notebook.


  • As we saw earlier in the course, some shapes are drawn with the same proportions. These shapes are considered to be
  • If you look at the ratios of the sides of two shapes, when these ratios are equal, the shapes are similar. When these ratios are not equal, the shapes are not similar.
  • Use ratios to determine if the triangles below are similar.

  • Can you determine if two shapes are similar by comparing the ratios of their corresponding sides?

  • Be sure to go back to your classroom to get any homework assignments or other activities you need to attend to.