There are infinitely many regular pentagons - a different one for each value for the length of its side.
20 :)
A pentagon has 5 sides. If you have 4 pentagons, you use: 4x5=20. Therefore, 4 seperate pentagons have 20 sides. This is not true if you have them combined however.
12
On the 32-panel soccer ball, there are 12 pentagons and 20 hexagons.
There are infinitely many regular pentagons - a different one for each value for the length of its side.
The answer depends on how many lines are shared by pentagons. There are at most 160 line segments.
If you are thinking of a solid with pentagonal faces, a dodecahedron, there are twelve pentagons
regular pentagons have no parrallel lines. irregular pentagons might but it depends. :))
500
20 :)
There are 11 times 5 = 55 sides in 11 pentagons.
A pentagon has 5 sides. If you have 4 pentagons, you use: 4x5=20. Therefore, 4 seperate pentagons have 20 sides. This is not true if you have them combined however.
Three pentagons have a total of 15 sides. Each pentagon has 5 sides, so when you have 3 pentagons, you would multiply 5 sides by 3 pentagons to get 15 sides in total.
Pentagons (including convex pentagons) have five sides. (The prefix penta- is greek for 5)
1 pentagon = 5 sides. 55 pentagons = 5*55 = 275 sides.
Only 1 pentagon