Friday 20th February 2026
    Difficulty: Very easy

    Curved lines (#1,190)

    Photo by <a href="https://unsplash.com/@benjagremler?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Benjamín Gremler</a>
    Photo by Benjamín Gremler (Unsplash)

    1. If a tennis player lobs a ball to their opponent, what is the shape of the curved path followed by the ball (ignoring any effects of air resistance)?

    2. What type of curve is formed when you slice a cylinder diagonally?

    3. How many curved lines are there on a football pitch?

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