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Examine the triangle at right. Each part is a separate problem.

Review the Math Notes Box in this Lesson 7.1.4.

  1. If and , then what is ?

    Use the Triangle Angle Sum Theorem:

  2. Solve for if , , and . Then calculate .

    Use the same method as part (a).

  3. If , what type of triangle is ?

    If all of the angles have equal measure, then all of the sides have equal measure.

Triangle D, E, F.