no
An irregular octagon.
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
no
An irregular polygon
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
a shape with 5 equal sides is a pentagon
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.
A pentagon has 5 sides
A shape with 5 sides and 5 angles is a pentagon.