MathsYears 12–13Coordinate Geometry

Straight-line geometry

Find equations of straight lines, gradients, midpoints, distances; perpendicular and parallel lines

What you'll learn

  1. 1

    Imagine a laser beam shooting from one point to another — that's a straight line! 📏

  2. 2

    How many points do you need to make a straight line?

  3. 3

    Drag the two points to draw a straight line between them.

  4. 4

    Let's find the midpoint of a line between (0,0) and (6,0).

  5. 5

    What is the midpoint of a line from (2,0) to (8,0)?

  6. 6

    Draw a line from (1,2) to (5,2) and find its midpoint.

  7. 7

    A straight line goes through (0,0) and (4,0). What is its length?

Practise Straight-line geometry with Whizlo

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