Semicircle semicircle
Concentric circle concentric circle
Quadrilateral quadrangle
pentagon
hexagon
heptagon
octagon
enneagon
A decagon. A decagon
Polygon polygon
parallelogram
regular
Airplane. Airplane.
Square square
Rectangular rectangle
regular polygon
Diamond diamond
Trapezoidal trapezium
Many of them can be remembered as long as you know them, hoping to help the landlord.