Mathematical Reasoning
Two separate 3D models sit on a table — they are not glued or joined into one shape. One model is a hexagonal…
Question 1 · Multiple choice
Question
Two separate 3D models sit on a table — they are not glued or joined into one shape. One model is a hexagonal prism (12 vertices). The other is a tetrahedron, also called a triangular pyramid (4 vertices). What is the total number of vertices on both models added together?
Options
- A. 10
- B. 12
- C. 14
- D. 16
- E. 18
Correct answer
D. 16
Explanation
The two solids are separate, so count the vertices on each one and then add them. The hexagonal prism has 12 vertices. The tetrahedron has 4 vertices. So the total number of vertices is: 12 + 4 = 16 So the answer is 16 vertices.