0580/13 Oct/Nov 2023, Question 9: Angles in a Triangle
Cambridge IGCSE Mathematics 0580 · Paper 13 (Core) · Calculator · 2 marks
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The question, in short
An equilateral triangle has a line drawn outward from one vertex; the two exterior angles there are each x°. Find x.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Each angle of an equilateral triangle is 60°
- 2Angles at a point: 2x = 360 − 60 = 300
- 3x = 150
Answer150
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Also searched as: 0580/13/O/N/23 · 0580_w23_qp_13 · 0580 w23 13 · question 9.
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