1mark 2019 CA1 P6 Paper1 River Valley P6 / River Valley / 2019 / CA1 / Paper 1 – Q04 [1 mark] Question: Which two lines in the square grid below are perpendicular to each other? Solution: Similar Posts P6 / ACS / 2019 / SA2 / Paper 2 – Q16 [5 marks] P6 / CHIJ / 2019 / CA1 – Q09 [3 marks]