Any shape can have any number of sizes.
Scalene triangle.
Similar
It is an irregular 8 sided octagon
A 7 sided shape is a heptagon
There is no specific name because there is no specific shape. The shape could have anything from 5 to 13 sides depending on the sizes and orientations of the triangle and square.
Hexagon,octagon,nonagon,are a few figures with the same shape but may have a different size. * * * * * Two or more figures of the same shape but with different sizes are said to be similar.
They have 7 sides how easy is that
A hexagon has 6 sides. A cube has 6 faces.
A Heptagon.
a heptagon.
Heptagon
Septagon