رنگ‌ها و اشکال - اشکال دو بعدی

a completely round, plain shape

دایره

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

مثلث

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

مستطیل

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

شبه‌لوزی

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

مربع

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

ذوزنقه

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

متوازی‌الاضلاع

(geometry) a flat shape with four equal sides in which opposite angles are equal

لوزی, متوازی‌الاضلاع

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

چندضلعی, چندگوش

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

مثلث قائم‌الزاویه

a triangle that does not have a right angle

مثلث غیر قائم الزاویه

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

مثلث مختلف الاضلاع

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

* مثلث متساوی‌الساقین, سه‌گوشه همسان‌پا

a type of triangle with all three sides of equal length

مثلث متساوی‌الاضلاع, سه‌گوشه همسان‌بَر

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

مثلث حاده

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

مثلث‌ منفرجه

(geometry) a parallelogram with four straight sides and no right angles

متوازی‌الاضلاع

any half of a circle

نیم‌دایره

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

لوزی

a rectangular figure that has unequal adjacent sides with arched angles

مستطیل دورگرد, round-edged rectangle

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

بیضی