A hexagon and a triangle.
a hexagon
Thirteen separte hexagons have 13x6 sides, or 78 sides. However, it's possible that they have shared borders, so then there would be fewer because you wouldn't count the same side twice if it was shared.
square
In the case of polygons (basically the simplest case), you need to determine that corresponding sides are proportional (for example, all sides in figure "B" are twice as large as the corresponding sides in figure "A"), and that corresponding angles are equal.
No. Adjacent sides, yes. (Twice the sum)
hexagon
a hexagon ( triangle has 3 and a hexagon has 6)
A 7 sided polygon has 14 diagonals
octagon-8 sides
a hexagon
An heptagon has 7 sides and 14 diagonals
A regular hexagon
A regular hexagon
A figure with twice as many sides as a triangle is a hexagon. A triangle has 3 sides, so double that would be 6 sides. A hexagon is a polygon with 6 sides and 6 angles. It is a regular polygon with all sides and angles congruent.
In a polygon with n sides, we have n(n-3)/2 diagonals. In a convex polygon with n sides, you can draw n-3 diagonals from each vertex, but you are counting each one twice you so you need to divide by do. That is why we have n(n-3) divided by 2
the polygon would be a square
Thirteen separte hexagons have 13x6 sides, or 78 sides. However, it's possible that they have shared borders, so then there would be fewer because you wouldn't count the same side twice if it was shared.