If the question is about a plane shape with exactly 3 right angles it could be an irregular polygon of 5 or more sides. If the shape can have more than 3 right angles then a square or rectangle are also possible. Finally, in 3 or more dimensions, a polyhedron with any number of faces can have 3 or more right angles.
The simplest shape that can have 2 right angles is a rectangle or a square. You can make an unlimited number of more complex shapes, though. A house shape is a pentagon with 2 right angles--you could even make it with 3 right angles.
A triangle. To be more specific, an equilateral triangle.
Squares and rectangles always have, but anyshapewith more than 3 sides can have 2 right angles.
Triangle
If the question is about a plane shape with exactly 3 right angles it could be an irregular polygon of 5 or more sides. If the shape can have more than 3 right angles then a square or rectangle are also possible. Finally, in 3 or more dimensions, a polyhedron with any number of faces can have 3 or more right angles.
An octagon
octagon. what are you 3
The simplest shape that can have 2 right angles is a rectangle or a square. You can make an unlimited number of more complex shapes, though. A house shape is a pentagon with 2 right angles--you could even make it with 3 right angles.
A regular shape has 3 or more sides of equal lengths and equal interior angles
There is no polygonal shape which has exactly those angles. It is possible for a concave polygon with 6 or more vertices to have the given angles.
There is no such shape because shapes or polygons must have 3 or more sides and there are 3 interior angles in a 3 sided polygon which is a triangle that add up to 180 degrees.
If the shape has 3 angles in all, where two of the angles are acute, then the shape is a scalene triangle.
a triangle
A triangle. To be more specific, an equilateral triangle.
A seven sided shape is a heptagon.
Squares and rectangles always have, but anyshapewith more than 3 sides can have 2 right angles.