4MA1/2F Jun 2025, Question 8: Angles in a Triangle
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2F (Foundation) · Calculator · 3 marks
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The question, in short
Using two crossing straight lines and an isosceles triangle BCD with BD = BC, find x, the angle at D, given angle ABE = 104°.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 3 marks
- 1Angle DBC = angle ABE = 104° (vertically opposite)
- 2BD = BC so angles BDC and BCD are equal
- 3180 − 104 = 76
- 4x = 76 ÷ 2 = 38
Answer38
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