BBC2 个月
2d shapes
Find out about regular 2d shapes and irregular polygons. What are the types of triangle? Find out about scalene, equilateral, isosceles and right-angled triangles. What are the parts of a circle?
These guys are 2D shapes and ... but have 2 long sides and 2 shorter sides. Books. TVs. Postcards. Pentagons, 5 sides. You can see these in the black shapes in the patterns on a football.