What you'll learn
Working with shapes, angles and measurements.
Key skills
- Angle rules: on a line, around a point, in triangles and polygons, and with parallel lines.
- Area and volume of common shapes and prisms; circle area and circumference.
- Pythagoras' theorem and basic trigonometry (sin, cos, tan).
- Similar shapes and scale factors (length, area, volume).
Exam tips
- Give reasons for each step in angle problems.
- Choose the correct trig ratio for the sides you have.
Common mistakes
- Using diameter instead of radius (or vice versa).
- Forgetting area scale factor = (length factor)².