1mark 2020 Catholic High P6 Paper1 SA2 P6 / Catholic High / 2020 / SA2 Prelims / Paper 1 – Q20 [1 mark] Question: Name the two lines that are perpendicular to each other. Solution: Similar Posts P6 / River Valley / 2019 / CA1 / Paper 1 – Q21 [2 marks] P6 / Henry Park / 2021 / SA2 / Paper 1 – Q07 [1 mark]