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    Similar Triangles: SAS, AA, SSS

    Theorems that prove triangles are similar

    There are three theorems that prove two triangles are similar.
    Three Postulates that Prove Triangles are Similar

    Angle Angle Practice problem
    Can you use the AA theorem to prove that the two triangles below are similar.

    Answer


    Side Side Side Practice Problems



    Below are two different versions of triangles HYZ and HIJ. (Assume scale is not consistent). Use the side side side theorem to determine which pair is similar.
      Answer  

    Side Angle Side Practice Problems


    Are the triangles pictured below similar? Use SAS to determine the answer.
      Answer  

    Side Angle Side
    Can you use the Side Angle Side theorem (SAS) to prove that the triangles pictured below similar?
      Answer  
    Side Angle Side SAS theorem problem

    Can you use the Side Angle Side theorem (SAS) to prove that the triangles pictured below similar?
      Answer  


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