Brainlag PlusWriting vectors in triangles, parallelograms and hexagons in terms of a and b, including midpoints and ratios.
Find a route
To write AB in terms of <b>a</b> and <b>b</b>, find a route from A to B along vectors you know.
Going with an arrow adds it; going against an arrow subtracts it.
Not drawn accurately
- AB = AO + OB
- AB = −a + b
The rest of this lesson and its 8 practice questions are in Plus.
Screen 1 of 3, free to read.
- 8 exam-style questions, marked as you go, each with a worked solution
- Anything you get wrong is saved to your flashcards