Mathematics for IGCSE & O level - Equations (Section 4 - No. 19) | ExamPlay

Mathematics for IGCSE & O level - Equations (Section 4 - No. 19)

In a triangle, the angles are x, 2x, and x + 20. What is the value of x?

25

40

60

35

Explanation

x + 2x + x + 20 = 180, 4x = 160, so x = 40

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