Understanding different types of angles and that angles in a triangle sum to 180° can be helpful when classifying a triangle. Recognising line symmetry and rotational symmetry will also help. Look for ...

to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to develop students' language related to different triangles to engage ...

This is a preview. Log in through your library . Abstract The Morley Trisector Theorem states that for an arbitrary triangle, the Morley triangle is equilateral, where the Morley triangle is a ...