Colors and Shapes - Two-Dimensional Shapes

a completely round, plain shape

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

(geometry) a flat shape consisting of three or more straight sides

a triangle that does not have a right angle

a type of triangle that has all three sides of different lengths

a type of triangle that has two sides of equal length and two angles of equal measure

a type of triangle with all three sides of equal length

a type of triangle in which all three angles are less than 90 degrees

a type of triangle that has one angle greater than 90 degrees

any half of a circle

a rectangular figure that has unequal adjacent sides with arched angles

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