### All Advanced Geometry Resources

## Example Questions

### Example Question #15 : Tetrahedrons

Given a regular tetrahedron with an edge of , what is the height (or diagonal)? The height is the line drawn from one vertex perpendicular to the opposite face.

**Possible Answers:**

None of the above.

**Correct answer:**

The height of a regular tetrahedron can be derived from the formula

where is the length of one edge.

Therefore, plugging in the side length of ,

.

### Example Question #16 : Tetrahedrons

Given a regular tetrahedron with an edge of , what is the height (or diagonal)? The height is the line drawn from one vertex perpendicular to the opposite face.

**Possible Answers:**

None of the above.

**Correct answer:**

The height of a regular tetrahedron can be derived from the formula where is the length of one edge.

Plugging in we can solve for .

### Example Question #17 : Tetrahedrons

Find the height of this regular tetrahedron:

**Possible Answers:**

**Correct answer:**

The height of a regular tetrahedron can be found using the formula where s is the length of the sides.

In this case, the sides have length , so we are multiplying .

We can simplify this by multiplying the numbers inside the radical:

, which simplifies to .