17.1 Properties of 2D and 3D shapes — Practise
Work independently, then check your answers and reasoning.
- Name the polygon with 8 sides.
- A cube has how many edges?
- How many vertices does a cuboid have?
- A triangular prism has how many faces?
- How many lines of reflection symmetry does a square have?
- In triangle ABC, name the angle at B using three letters.
- A right-angled triangle has its right angle at C. If angle A is 35 degrees, work out angle B.
- How many edges and vertices does a sphere have?
Answers and concise solutions
1. Name the polygon with 8 sides.
Answer: An octagon
2. A cube has how many edges?
Answer: 12 edges
3. How many vertices does a cuboid have?
Answer: 8 vertices
4. A triangular prism has how many faces?
Answer: 5 faces
5. How many lines of reflection symmetry does a square have?
Answer: 4 lines
6. In triangle ABC, name the angle at B using three letters.
Answer: Angle ABC (or CBA)
7. A right-angled triangle has its right angle at C. If angle A is 35 degrees, work out angle B.
Answer: 55 degrees
8. How many edges and vertices does a sphere have?
Answer: 0 edges and 0 vertices