Question

Attributes of Rectangular Prisms and Pyramids Practice
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Question
There is a row of two triangular pyramids and one pentagonal pyramid in a display at a museum. How many lateral faces are there altogether?(1 point)

Answer 1

To find the total number of lateral faces for the two triangular pyramids and one pentagonal pyramid, we can break it down as follows:

- A **triangular pyramid** (tetrahedron) has 3 lateral faces.
- A **pentagonal pyramid** has 5 lateral faces.

Now, calculate the total number of lateral faces:

1. For two triangular pyramids: \( 2 \times 3 = 6 \) lateral faces
2. For one pentagonal pyramid: \( 5 \) lateral faces

Now add them together:

\[ 6 + 5 = 11 \]

So, the total number of lateral faces altogether is **11**.