Exercise of the Week #8

Back to English today; a model answer with guidance will be posted underneath next week’s exercise.

Last Week’s Answers

1)      I imagine you’ve written a cube! There are some much more complicated alternatives (such as a triangular bipyramid) but we don’t need to know about those for now…

2)      A cylinder is comprised of a rectangle and two circles. You can remember this as a cylinder is shaped like a tin: there’s a circular lid and base and a rectangular label.

3)      A pentagonal prism is effectively a 3D pentagon. The definition of a prism is a shape which has the same cross-section at all points along one of its dimensions. In this case, that shape is a pentagon.

4)      A square-based pyramid has five vertices and eight edges. Multiply these to get 40. A trickier one to spot.

5)      A sphere, when cut, will always give a circle. This circle is largest when you cut directly through the centre.

6)      Which 2D shape has angles which add to 720? You may know that this is a hexagon. Each of the internal angles of a hexagon is 120, and there are 6. As it looks like a rectangle from above, we must be thinking of a hexagonal prism.