Recognise and classify types of triangles on the basis of their properties (acute-angled triangles, right-angled triangles, obtuse-angled triangles, equilateral triangles, isosceles triangles and scalene triangles)
| 1. | Phoebe's Triangle Theorems 4 - sides and angles of equilateral triangles | |
| 2. | Shape Up! 2 - deduce type of triangle |