no
In geometry sets, there are two: one is an isosceles right angled triangle, and the other is a triangle with angles of 90-60-30 degrees.
No.
A rectangle or a square are sets of quadrilaterals with two pairs of right angles. They each have two pairs of right angles and two sets of equal sides.
Supplementary.
A shape with parallel sides but no right angles is called a parallelogram
A parallelogram
The rhombus.
parallelogram
parallelogram
A quadrilateral with two sets of parallel side and right angles is called a rectangle. If all the sides are the same size it is also called a square.
A rectangle has two sets of two equal sides and four right angles.
In the instance of a triangle it is equilateral. Most quadrilaterals have equal sides as well (such as a rectangle with two sets of equal sides).