The sum of all the sides of a given shape is the perimeter of that shape.
The description given fits that of a scalene triangle.
The shape is called a decagon. If all the sides and angles are the same, it is called a regular decagon.
This shape is called an icosikaitera. All of the sides of the icosikaitera are all of the same equal length.
A six sided shape is called a hexagon.If all the sides have the same length and all the internal angles are the same it is a Regular hexagon.
Regular polygons
no. when you add all of the sides of a certain shape together that's called the perimeter. the width is usually given.
A shape with eight sides is always an octagon. If all angles and sides are equal, it is called a regular octagon.
it is called the sum just like in adding.
irregular quadrilateral
If all sides are straight, then it is known as a triangle.
A shape that has five sides is called a pentagon. A normal pentagon has all five sides that are the same length.
Six sided shapes are called hexagons. If all 6 sides are the same size, then the shape is called a regular hexagon.