It is a closed shape made of curved lines.įAQs on Plane Shapes Is a Circle a Polygon?Ī polygon is a closed shape formed by straight lines. A circle is a round shape formed by curved lines. Oval has no straight line, or corner, or side to it. 2D shapes are closed shapes that are created by joining straight/curved lines together.Ī square is a quadrilateral with four equal sides and four right angles.Ī rectangle is a quadrilateral with two pairs of equal and parallel opposite sides and four right angles.Ī circle is formed by the set of points that are at a constant or fixed distance ( radius) from a fixed point (center) in the plane.Ī triangle is a closed figure or shape with 3 sides, 3 angles, and 3 vertices.Ī polygon is a closed two-dimensional figure with three or more straight lines.
These are the two dimensions known as length and width. A two-dimensional shape does not have any depth.
