Year 10 Autumn 1

SIMILARITY & TRIGONOMETRY

OVERVIEW

Building on their experience of enlargement and similarity in previous years, this
half term extends studentsā€˜ experiences and looks more formally at dealing with
topics such as similar triangles. Parallel line angle rules are revisited to support establishment of similarity.
Higher level content extends enlargement to explore negative scale factors, and also looks at establishing that a pair of triangles are congruent through formal proof.

Trigonometry is introduced as a special case of similarity within right-angled triangles. Emphasis is placed throughout by linking the trigonometric functions and ratio, rather than functions. For higher level , calculation with trigonometry and non-right angled triangles is taught.

Lesson Resources