A shape with four sides has four vertices and a shape with three sides has three vertices, so a shape with four sides has more vertices than a shape with three sides.
There are basically two techniques for finding the area of a shape with uneven or irregularly shaped sides. If the sides can be described by algebraic equations, then integral calculus can be used to find the area. Failing that, you can approximate the irregular shape by fitting in a number of smaller, regularly shaped polygons such as squares and triangles, whose area can be calculated by simple geometric techniques.
Triangle
-3
An irregularly truncated hexagon.
no
An irregular polygon
An irregular pentagon.
An irregular octagon.
A trapezium.
Any shape with 10 sides is called a decagon. A regular decagon is a shape with 10 even sides, so you are looking for an irregular decagon.
an four sided figure is called a quadrilateral.
It can be irregular too so it's a septagon
3 sides it is still a triangle but all sides are uneven
3 uneven sides 3 corners
Add up the lengths of the sides.
Not exactly. They are two names for the same shape. The typical shape consists of a four-sides figure with opposite sides (and angles) equal. Each pair of parallel sides are the same length.