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a completely round, plain shape
円, 丸
a shape with four equal straight sides and four right angles, each measuring 90°
正方形, 四角形
(geometry) a flat shape consisting of three straight sides and three angles
三角形, 三角形状
(geometry) a flat shape with four right angles, especially one with opposing sides that are equal and parallel to each other
長方形, 長方形の図形
a shape that is wide in the middle and narrow at both ends
楕円, 楕円形
a shape with four equal, sloping straight sides, forming a point at the top and another at the bottom
菱形, ダイヤモンド
a shape with five or more points, representing a star in the sky
星, スター
(geometry) a round object that every point on its surface has the same distance from its center
球体
a figure, either hollow or solid, with six equal square sides
立方体, サイコロ
(geometry) a solid or hollow shape with two circular bases at each end and straight parallel sides
円柱, 円柱形
(geometry) a three dimensional shape with a circular base that rises to a single point
円錐, 幾何学的円錐
a solid object with a square base and four triangular sides joined to a point on the top
ピラミッド, ピラミッド型の建物
a three-dimensional geometric shape with six rectangular faces, resembling a box or a rectangular prism
直方体, 矩形柱
either half of a sphere
半球, ヘミスフィア
(geometry) a solid figure with flat sides and two parallel ends of the same size and shape
プリズム
(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other
平行四辺形, 四つの直線からなる平面図形で、向かい合う辺が等しく平行であるもの
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
三日月, 新月
a mark or an object formed by two short lines or pieces crossing each other
十字, バツ印
(geometry) a curved shape or design that gradually winds around a center or axis
螺旋, 渦巻き
a flat geometric shape consisting of three straight sides and one right angle
直角三角形, 直角を持つ三角形
(geometry) a figure with four sides and two opposite angles more than 90° and two of less than 90°
菱形, 斜方形
(geometry) a round 3D shape like a ball that is slightly flattened at the top and bottom points
回転楕円体, 扁球
any half of a circle
半円, 半円形
a geometric shape with five angles and five straight sides
五角形, 五辺形
(geometry) a closed shape with six straight sides and six angles
六角形, 六辺形
a seven-sided plane shape consisting of seven line segments or edges that meet at seven interior angles
七角形, ヘプタゴン
(geometry) a polygon consisting of eight straight sides and eight angles
八角形, 八辺形
(geometry) a flat polygon with ten straight sides and ten angles
十角形, 十辺形
a five-pointed star
五芒星, 五角星
(geometry) a flat star-shaped figure with six points that can be formed by making equilateral triangles on each side of a regular hexagon
六線星, 六芒星
(geometry) a shape that consists of a line alternating its direction to left and right
ジグザグ, 折れ線
(geometry) a flat figure consisting of eleven straight sides and eleven angles
十一角形, ヘンデカゴン
a rectangular figure that has unequal adjacent sides with arched angles
長方形,細長い長方形, round-edged rectangle
a solid shape resembling a donut or ring, made by spinning a circle around a line that does not cut through the circle
トーラス, 輪
a line or shape that is not straight and bends gradually
曲線, 湾曲した線
a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended
平行, 平行線
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