a triangle a triangle
irregular hexagon?
No. The sum of the angles in any 4-sided shape must all ways add up to 360 degrees. So if 3 of the angles in such a shape are right angles the 4th must be as well, which would make the shape a rectangle.
A square with a rounded corner. =)
An irregular hexagon
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.
A seven sided shape is a heptagon.
A shape with 3 right angles and 2 obtuse angles is a pentagon. A pentagon is a five-sided polygon, and when three of its angles are right angles (90 degrees each) and two are obtuse angles (greater than 90 degrees each), it meets the criteria specified. This specific type of pentagon is known as a concave pentagon, as it has at least one interior angle greater than 180 degrees.
No because a parallelogram in the shape of a rectangle has 4 right angles
You can make a four sided shape with 3 right angles, but it must have another right angle, too. So technically, yes.
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 Pentagon is five sided and CAN have 3 right angles.
you cannot make a regular shape which has 3 right angles only, you will always end up with 4 right angles
A irregular hexagon
A heptagon.
a triangle a triangle
irregular hexagon?