One thought on “P6 / Raffles Girls / 2019 / SA2 / Paper 2 – Q08 [3 marks]”

  1. In case this solution needs more explanation,

    (a) Angle EFG + Angle FGC = 180 deg (Angles between parallel lines in trapezium = 180 deg)
    Angle FGC = 180 deg – Angle EFG = 180 deg – 110 deg = 70 deg

    (b) Angle FEC + Angle GCE =180 deg (Angles between parallel lines in trapezium = 180 deg)
    Angle GCE = 180 deg – Angle FEC = 180 deg – 90 deg = 90 deg
    Angle ECD = 360 deg – 230 deg – Angle GCE = 130 deg – 90 deg = 40 deg (Angles around a point = 360 deg)
    Angle BCD = 90 deg (right angle in a rect) = Angle ECB + Angle ECD
    Angle ECB = 90 deg – Angle ECD = 90 deg – 40 deg = 50 deg

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