Key Stage 3 · Years 7-9 · Geometry and measures
use Pythagoras’ Theorem and trigonometric ratios in similar triangles to solve problems involving right-angled triangles
Statutory requirement
Pupils should be taught to use Pythagoras’ Theorem and trigonometric ratios in similar triangles to solve problems involving right-angled triangles
Source: Department for Education, National curriculum in England: mathematics programmes of study (Key stage 3). Crown copyright information reproduced under the Open Government Licence v3.0.
ChalkBee reference:
uk-ks3-ma-gm-14. The DfE does not assign an official alphanumeric code to KS3 statements; this reference is site-internal.Relevant worksheets
These resources support parts of the requirement. They are not presented as a complete assessment of every clause.
Pythagoras' Theorem: Finding the Hypotenuse (Year 9)
Grade 8 · printable with answer key
Pythagoras' Theorem: Finding a Missing Leg (Year 9)
Grade 8 · printable with answer key
Pythagoras' Theorem: Word Problems (Year 9)
Grade 8 · printable with answer key
Trigonometric Ratios: SOH-CAH-TOA (Year 9)
Grade 8 · printable with answer key
Trigonometry: Finding a Missing Side (Year 9)
Grade 8 · printable with answer key
Trigonometry: Finding a Missing Angle (Year 9)
Grade 8 · printable with answer key
Related teaching units
These existing units provide relevant lesson material. A dedicated unit may still be needed where the requirement is broader.