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Home > GC > Chapter 4 > Lesson 4.1.1 > Problem 4-6
4-6.
Use what you know about the angles of a triangle to find the value of
Use the Triangle Angle Sum Theorem, explained in the Math Notes box in Lesson 2.2.1.
Use what you know about the angles of a triangle to find the value of
Use the Triangle Angle Sum Theorem, explained in the Math Notes box in Lesson 2.2.1.