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V = 18 x 8 x 12 = 1728 cm3 = 1728 ml = 1.729 liters
An exterior angle is formed by one side of the triangle, and a side EXTENDED outside the triangle. Two angles are like that, ∠4 and ∠2.
Angle 3 is NOT an exterior angle because it is made up of two extended sides. It does not use one of the sides of the triangle.
Answer: the domain is - infinity , + infinity
Step-by-step explanation:
