cone

Everyday

1. A cone is a 3D shape with a round flat base that narrows to a point at the top. tree →
2. An ice-cream cone is a crispy cone-shaped holder for ice cream. tree →
3. A traffic cone is an orange or red plastic cone used on roads. tree →
4. A pine cone is the hard, scaly seed case of a pine or fir tree. tree →
5. Cones are also cells in your eyes that see colour. tree →

In the lessons

In maths a cone has one curved face, one flat circular face, one edge and one vertex (apex). In science pine cones hold seeds; volcanoes are cone-shaped. In road safety cones mark danger or work areas. Phrases: «ice-cream cone», «traffic cone», «pine cone».

Examples

• A cone has one curved face and one circular face. tree →
• I'd like a chocolate ice-cream cone, please. tree →
• The road workers put out traffic cones. tree →
• We collected pine cones in the park. tree →
• A volcano is often shaped like a cone. tree →
• The party hat is a cone. tree →
• The coach set out cones for football practice. tree →
• Thus Iktomi lives alone in a cone-shaped wigwam upon the plain. tree →

Note

Countable. Maths: a cone is not a pyramid (a pyramid has a polygon base and flat triangular faces). Volume of a cone = one third of the volume of a cylinder with the same base and height. Adjective: conical.