== == An isosceles triangle with sides 5, 5, 3. The only line of symmetry is the line joining the midpoint of the side of 3 units to its opposite vertex.
A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
2D shape
A 2D shape with 9 sides is called a Nonagon.
Hexagon
A pentagon
A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
The 2D shape which has one line of symmetry is the trapezium.
a line
2D shape
It doesn't have any volume (3D) and it's not a line (1D). Thus, it is a 2D shape.
A 2D shape with 9 sides is called a Nonagon.
Octagon
2D shapes include squares, triangles, rectangles and circles.
1D a single line (?) 2D a flat shape 3D a cube
Square
hexagon
Hexagon