It is simply a closed seven-sided plane figure, bounded by seven straight lines, each of the same length. There is no requirement for the angles to be the same - in fact the shape can be concave.
An equilateral heptagon, more usually called a regular heptagon, is a 7-sided polygon in which all the sides are of equal length.
heptagon and an equilateral triangle
A seven-sided shape (polygon) is called a heptagon.
Arrange the triangles to make a regular hexagon. Then move one of the triangles so that its side lies alongside the side of one of its former neighbours.
a heptagon is a dog
A heptagon is a seven-sided polygon.
No.
No
heptagon and an equilateral triangle
A regular heptagon is a polygon with seven equilateral sides. The shape must also be equiangular and convex.
None but there are 6 in a regular hexagon
You can fit 7 regular/equilateral triangles inside a Heptagon since a Heptagon has got 7 sides and vertices.
That depends on the type of triangle it is but if it's an equilateral triangle then its exterior angle is greater than that of a regular heptagon
If they are both regular then the 7 sided heptagon has a larger interior angle than a 3 sided equilateral triangle.
Join the 6 triangles like pizza slices
Perimeter = 7*24 = 168 cm
It is the equilateral triangle that has the largest exterior angle of 120 degrees
No. Equilateral heptagons (7 sided figures) do not tessellate the plane. Not if no other polygons are allowed. But if you allow a (non-equilateral) pentagon then you might be able to tessellate the plane!