All categories

3 years ago

How many edges are there in an octahedron, a polyhedron with eight congruent triangular faces?

1 answer:

5 0

An octahedron in geometry is defined as a polyhedron with eight faces, six vertices and twelve edged. The term is used for regular octahedron mostly.
Thus we can summarize it as:
Number of edges: 12
Number of faces: 8
Number of faces: 6
the answer is 12 edges.

You might be interested in

Find the slope of the line containing the points (7,5) and (9,5).

svet-max [94.6K]

Answer:

$\frac{2}{4}$

Step-by-step explanation:

Remember that in order to find the slope of two points you need to substitute the variables and subtract making sure you keep the 2's and the 1's together.

$m=\frac{y2-y1}{x2-x1}$

Plugin your numbers:

$=\frac{7-5}{9-5}$

$7-5=2$

$9-5=4$

$=\frac{2}{4}$

Hope this helps.

5 0

3 years ago

Read 2 more answers

A person who is 68in tall casts a shadow that is 54in long. At the same moment, a tree casts a shadow that is 18ft long. What is

34kurt

Answer:

22.67 ft is the height of tree.

Step-by-step explanation:

Given:

Height of a person is 68 in and casts a shadow that is 54 in long.

At the same point, a tree casts a shadow that is 18 ft long.

Now, to find the height of tree.

Let the height of tree be $x.$

If height of a person is 68 in he casts a shadow of 54 in.

So, 68 in is equivalent to 54 in.

Thus, $x$ is equivalent to 18 ft.

Now, to get the height of tree by using cross multiplication method:

$\frac{68}{54} =\frac{x}{18}$

By cross multiplying we get:

$1224=54x$

Dividing both sides by 54 we get:

$22.67=x$

$x=22.67\ ft.$

Therefore, the height of the tree is 22.67 ft.

6 0

3 years ago

A circle with a radius of 5 is inscribed in a equilateral triangle. What is the area of the triangle's area minus the circle's a

Aleonysh [2.5K]

First off, the area of the circle would be 78.54

Now, you would do (area of the triangle)--- AT-78.54=answer

I don't know how to find the area of the triangle with just the circle's radius, so this is all I can do. I'm sorry!

4 0

3 years ago

Need help on 6 and 7 asap! Will mark brainliest!!

MrMuchimi

I did number 6 to give you an idea of what you have to do. First find simplify the top and bottom and reduce!

Hope it helps! Comment if you have any questions!