How many edges does a triangular prism have?
Answer and explanation
Correct answer: B. 9
- Step 1: The two triangular ends have edges each: .
- Step 2: Three rectangular edges join the two triangles: more.
- Step 3: Total: .
Answer
9.
Why not the others: 6: This counts only the edges of the two triangular ends. 5: This is the number of faces, not edges. 12: This is the number of edges of a cuboid.
Practise more Geometry and Measures.
Free questions with an explanation for every one, and full timed GCSE English and Maths Resits (Grade 4) mock tests.
More Geometry and Measures questions
- What is the size of one interior angle of a regular octagon?
- What is the total surface area of a cuboid measuring cm by cm by cm?
- The bearing of town from town is . What is the bearing of from ?
- An isosceles triangle has two sides of cm and a base of cm. What is its area?
- A ladder m long leans against a vertical wall. Its foot is m from the wall. How high up the wall does it reach?
- The point is translated by the vector . What are the coordinates of its image?