TLF ID M012845
This is a website designed for both teachers and students that introduces congruence of shapes in the plane through transformations. In particular, transformations, translations, reflections in an axis and rotations of multiples of 90 degrees are used to define congruence and to identify congruent shapes. The four congruence tests for triangles are developed and utilised. In particular, quadrilaterals are investigated with the help of an understanding of congruent triangles. There are pages for both teachers and students. The student pages contain interactive questions for students to check their progress in the topic.