3 years ago

The angles of a triangle are 80º, 2x + 2º, and 5xº. What is the value of x?

1 answer:

7 0

Since the sum of the angles of a triangle = 180°

Then <span>80º + (2x + 2)º + 5xº = 180</span>°
82° + (7x)° = 180°
(7x)° = 180° - 82°
x = 98° ÷ 7
∴ x = 14

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