← Ai Tong School · Paper 2

Question 6a

Video explanation ↓

Figure 1 shows Triangle ABC. BA = BC.Figure 2 shows the same triangle after it is folded along line DE.Find ∠x. (1 mark)

$Question 6a diagram$

Answer: 48 °

Workings

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since BA = BC, that makes BAC an isosceles triangle

∠ x = (180 - 84) ÷ 2 = 48

Video explanations

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