The exterior angle of each hexagon can be any measure you like, including reflex angles. Two such hexagons can be joined together at any pair of angles that are smaller than 180 degrees. So the exterior angle formed can range from 0 to 360 degrees (excluding the two bounds).
sometimes
It's possible but usually not. But any two regularones are definitely always similar.
No. They're always in the same ratio.
Both of their exterior angles add up to 360 degrees
250.00
Their interior and exterior angles are always the same but their perimeters may vary in length. But that is what "similar" means; so the answer is YES.
No, they are not.
No. Two regular hexagons are always similar to each other, but two random hexagons are not necessarily similar.
sometimes
It's possible but usually not. But any two regularones are definitely always similar.
No. They're always in the same ratio.
always
-- All regular (equilateral) triangles are similar. -- All squares are similar. -- All pentagons are similar. -- All hexagons are similar. . . . etc. Any regular polygon is similar to all other regular polygons with the same number of sides.
isobars
isobars
Both of their exterior angles add up to 360 degrees
No. They are proportional, meaning that if side A of one hexagon is, for example, twice the corresponding side A' of the other hexagon, then side B will also be twice the size of side B', etc.