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Home > CCG > Chapter 5 > Lesson 5.3.2 > Problem 5-89


Lizzie noticed that two angles in , shown at right, have the same measure. Based on this information, what statement can you make about the relationship between and ?  

They must have equal lengths, because if base angles are equal, then the sides opposite them are equal and the triangle is isosceles.

Triangle D, E, F, with angle, D, labeled 54 degrees, and angle, F, labeled 54 degrees.