It is a regular 5 sided pentagon whereas each interior angle is 108 degrees and the 5 angles add up to 540 degrees
It has less than three sides.
Pentagon.
A right angle triangle
A shape that has more sides than a triangle or rectangle but fewer angles than a hexagon is a pentagon. A pentagon has five sides and five angles, which fits the criteria, as a triangle has three sides and angles, a rectangle has four sides and angles, and a hexagon has six sides and angles.
I don't think there can be a shape with less than 3 sides.Or did you mean a name with two sides ??
a rhombus
A triangle or a circle.
It has less than three sides.
pentagon
Pentagon.
Common shapes with less than 4 sides are triangles and circles ( but the circle has no straight sides).
triangle
The pentagon satisfies those criteria precisely.
triangular pyramid-4 equal faces
Less than Angels was created in 1955.
A right angle triangle
A shape that has more sides than a triangle or rectangle but fewer angles than a hexagon is a pentagon. A pentagon has five sides and five angles, which fits the criteria, as a triangle has three sides and angles, a rectangle has four sides and angles, and a hexagon has six sides and angles.