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Mathematics for IGCSE & O level - Angles (Section 3 - No. 27)

In a triangle, the angles are represented by x, 2x, and 3x. What is the value of x?
30°
45°
60°
90°

解释

The sum of angles in a triangle is 180°. x + 2x + 3x = 180; 6x = 180; x = 30°.

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