J's answer to Keson's Primary 6 Maths Angles Singapore question.
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Refer to my comment. Realise that
∠1 + ∠ 2 + ∠ 3 + ∠ 4 + ∠ 5 = 180°
∠1 + ∠ 2 + ∠ 3 + ∠ 4 + ∠ 5 = 180°
Date Posted:
6 years ago
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