アカデミック IELTS (バンド 6-7) - Geometry

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

円柱

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

球, スフィア

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

六角形

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

円錐

(mathematics) the ratio of the opposite to the adjacent side of a triangle that has one angle of 90°

タンジェント

a straight line with one endpoint that extends infinitely in the other direction

光線

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

二等辺三角形

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

八角形

in geometry, a pattern or shape that exhibits a twisting or spiraling motion, often characterized by continuous, curved lines forming a rotational or helical design

渦, スパイラル

a point where two or more lines, edges, or rays meet to form an angle, or the point at which the sides of a polygon intersect

頂点, 角点

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

楕円

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

多角形

a geometric shape with five angles and five straight sides

五角形

(geometry) a line curved on a conical or cylindrical surface, like a spiral staircase in shape

ヘリックス, 螺旋

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

十角形

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

九角形

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

七角形

a three-dimensional shape similar to a stretched or compressed sphere

楕円体, エリプソイド

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

直方体, 長方形のプリズム

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

球体, 楕円体

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

プリズム

a solid shape made of flat sides that fit together along their edges

多面体

a three-sided polygon

三角形, トリゴン

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

ヘキサグラム, 六角星

an angle that measures either less or more that 90 degrees

斜角, 直角以外の角

an angle that measures greater than 180 degrees but less than 360 degrees

反射角, 180度を超える角

a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side

直径

(geometry) the length of the external boundary of a curved shape, especially a circle

円周

the length of a straight line drawn from the center of a circle to any point on its outer boundary

半径