Two.
A trapezoid can have either zero, one, or two right angles. In the case of a right trapezoid, it has exactly two right angles. However, a general trapezoid may have no right angles at all. Therefore, the number of right angles in a trapezoid varies depending on its specific type.
An isosceles trapezoid can have either zero, one, or two right angles, depending on its specific dimensions and angles. In a standard isosceles trapezoid, which has one pair of parallel sides and the non-parallel sides being equal in length, it typically has no right angles. However, if designed to have right angles at the base, it can have two right angles.
A trapezium can have at most two right angles. But it need not have any.It is a quadrilateral and so the sum of its four angles must be 360 degrees. If there are 3 right angles then they sum to 3*90 = 270 degrees and so the fourth must be 360-270 = 90 degrees. Therefore it has four right angles and then is no longer a trapezium but a rectangle!
The fewest number of right angles in a triangle is zero.
Zero. An equilateral triangle, for example, has no right angles.
Zero, or, if it has to have one, one.
0 or 1. A right triangle has one right angle. All other triangles have zero right angles.
The minimum number is zero(0). The maximum number is one (1).
Origin
There are zero right angles in a trapizoid............
A convex nonagon can have between zero (0) and three (3) right angles. A general nonagon can have between zero (0) and six (6) right angles.
a coordinate plane