No.
For example a parallelogram does not have any right angles. The internal angles of all four sided shapes will always equal 360 degrees, but do not necessarily have to include right angles.
A regular 5 sided pentagon is one such example of a shape having no right angles
rectangle, square
Any shape with 4 right angels is a quadrilateral.
a triangle a triangle
irregular hexagon?
a Pentagon is five sided and CAN have 3 right angles.
A regular 5 sided pentagon is one such example of a shape having no right angles
A seven sided shape is a heptagon.
You can make a four sided shape with 3 right angles, but it must have another right angle, too. So technically, yes.
a shape with 5 sides and 2 right angles is or are a pentagon so the answer is a pentagon
rectangle, square
Any shape with 4 right angels is a quadrilateral.
A regular 5 sided pentagon is one such example of a shape having no right angles
A kite.
a triangle a triangle
0
An irregular hexagon.