A regular octagon.
Octagon.
You can find out how many angles are in a shape by counting how many edges a shape has. for instance.. a square has 4 edges so it has 4 angles
square
hexagon and octagon.
Any shape with straight edges can have perpendicular edges.
No, an oblong is not a curved shape; it is a type of rectangle that is longer than it is wide, characterized by straight edges and right angles. The term "oblong" typically refers to the overall elongated shape rather than any curvature. In contrast, curved shapes, such as circles or ellipses, have rounded edges.
a Rhombus...
A rhombus is one of them
a circleA pedantic edit:Also an ellipse or a wriggly loop.Any shape that has no straight edges is described as a curvilinear shape.
A rectangle book has a rectangular shape, with four straight sides and four right angles.
Every shape that is round does not have edges. A shape that has sharp points and has straight lines can have edges.
A regular tetrahedron (an equilateral triangular pyramid).