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Home > MC1 > Chapter 8 > Lesson 8.4.1 > Problem 8-109
8-109.
The measures of the angles in a triangle add up to 180 degrees.
40° + 50° + m = 180°
90° + m = 180°
m = 90°
Refer to part (a).
The measures of the angles in a triangle add up to 180 degrees.
40° + 50° + m = 180°
90° + m = 180°
m = 90°
Refer to part (a).