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For each triangle below, solve for the variable and answer the questions.  Homework Help ✎

 Triangle1                    Triangle 2

  1. Solve for x.  What kind of triangle is ∆ABC? Be specific.

    What is true about the base angles of isosceles triangles?

    x = 45°

  2. Solve for y.  What kind of triangle is shown in the figure? Be specific.

    Notice the supplementary angle with y. A supplementary angle adds up to 180°. Can you form an equation to solve for y?