Basic Nouns - Shapes

a completely round, plain shape

a shape with four equal straight sides and four right angles, each measuring 90°

(geometry) a flat shape consisting of three straight sides and three angles

(geometry) a flat shape with four right angles, especially one with opposing sides that are equal and parallel to each other

a shape that is wide in the middle and narrow at both ends

a shape with four equal, sloping straight sides, forming a point at the top and another at the bottom

a shape with five or more points, representing a star in the sky

(geometry) a round object that every point on its surface has the same distance from its center

a figure, either hollow or solid, with six equal square sides

(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides

(geometry) a three dimensional shape with a circular base that rises to a single point

a solid object with a square base and four triangular sides joined to a point on the top

a three-dimensional geometric shape with six rectangular faces, resembling a box or a rectangular prism

either half of a sphere

(geometry) a solid figure with flat sides and two parallel ends of the same size and shape

(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other

(geometry) a flat shape with four flat sides, two of which are parallel

a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters

a mark or an object formed by two short lines or pieces crossing each other

(geometry) a curved shape or design that gradually winds around a center or axis

a four-sided shape with two pairs of equal-length adjacent sides

a flat geometric shape consisting of three straight sides and one right angle

(geometry) a figure with four sides and two opposite angles more than 90° and two of less than 90°

(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points

any half of a circle

a geometric shape with five angles and five straight sides

(geometry) a closed shape with six straight sides and six angles

a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles

(geometry) a polygon consisting of eight straight sides and eight angles

(geometry) a flat shape consisting of nine straight sides and nine angles

(geometry) a flat polygon with ten straight sides and ten angles

a five-pointed star

(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon

(geometry) a shape that consists of a line alternating its direction to left and right

(geometry) a flat figure consisting of eleven straight sides and eleven angles

(geometry) a flat figure that consists of twelve sides and twelve angles

a polygon with thirteen sides and thirteen angles

a rectangular figure that has unequal adjacent sides with arched angles

a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle

a line or shape that is not straight and bends gradually

(mathematics) any of the pair of geometric figures such as lines or planes which do not meet or intersect

(geometry) a closed plane curve that has two focal points