0580/11 Oct/Nov 2023, Question 8: Angles in a Triangle
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 2 marks
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The question, in short
An isosceles triangle has two equal sides meeting at the bottom vertex with angle x°; one base angle is 41°. Find x.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Base angles of an isosceles triangle are equal: 41° and 41°
- 2x + 41 + 41 = 180
- 3x = 98
Answer98
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