This is a special case of a quadrilateral called a rectangle.
A square is a plane geometric figure having 4 equal sides and 4 right angles.
A rectangle has four right angles. Otherwise it wouldn't be a rectangle.
a parallelogram with four right angles with sides different in length and width is That would be a rectangle. - HistoryDork
well right angle is 90 degress or a perfect l a straight angle is 180 degress
Rectangles
rectangle
parallelogram
An acute triangle.
a circle
This is a special case of a quadrilateral called a rectangle.
All triangles that are not right triangles.
right
No. The term is actually applied to a different geometric shape: one with adjacent pairs of equal angles (truncated isoceles triangle). There is such a geometric shape as a "right trapezium" (US) and a "right trapezoid" with adjacent right angles (e.g. "the doorstop" or truncated rectangle that includes a square or rectangular segment).
Rectangle, octagon, hectagon, square...
Circle, cone, cylinder, sphere and equilateral triangle for example.
A rhombus