Which types of polygons are the faces of a octahedron?

Each face of an octahedron is an equilateral triangle.

An octahedron is a three-dimensional solid (polyhedron) that has eight faces.

I hope this helped ! <3

Triangles

Step-by-step explanation:

If you look up octahedron, you can see that triangles make up the faces of an octahedron.

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2