4th year of secondary education - Option A.




The first criterion.

The second criterion.

The third criterion.

Similar triangles

This unit provides a detailed study of similarity focusing specifically on similar triangles.

The criteria governing similarity are analysed and exercises are carried out to focus in these criteria.

  • To recognize and be able to construct similar triangles using any of the criteria studied in this unit.
  • To understand the concept of ratio of similitude as well as know how to calculate it and apply it to solve problems with similar triangles.

  Máximo Prudencio Conejo
Spanish Ministry of Education. Year 2001