Any rectangle that isn't a square.
rectangle
This is a special case of a quadrilateral called a rectangle.
a rectangle (that is NOT a square) has 4 right angles and consecutive sides of unequal lengths.
a circle
An acute triangle.
All triangles that are not right triangles.
right
Rectangle, octagon, hectagon, square...
Circle, cone, cylinder, sphere and equilateral triangle for example.
A rhombus
rectangle
How about a rectangle which is a quadrilateral with sides of different lengths