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IELTS Academicの語彙 (スコア5) - Geometry

ここでは、基本的なアカデミックIELTS試験に必要な幾何学に関連するいくつかの英単語を学びます。

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Vocabulary for IELTS Academic (Band 5)
cube
cube
[名詞]

a three-dimensional figure made of six square or rectangular faces

立方体, 立方体

立方体, 立方体

Ex: The storage box was shaped like a cube. 
oval
oval
[名詞]

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

楕円, 楕円形

楕円, 楕円形

Ex: The artist painted an oval in the center of the canvas for emphasis. 
diamond
diamond
[名詞]

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

菱形, ダイヤモンド

Ex: The baseball field was laid out in the form of a diamond. 
angle
angle
[名詞]

the space between two lines or surfaces that are joined, measured in degrees or radians

角度, 角度 (測定)

角度, 角度 (測定)

Ex: She used a protractor to measure the angle of the triangle accurately. 
line
line
[名詞]

a row of people or things behind each other or next to each other

列, 線

列, 線

Ex: The buses were parked in a line at the bus station. 
point
point
[名詞]

(geometry) an element that only has position, with no size or dimension

点, 幾何学的要素

点, 幾何学的要素

Ex: A point is represented by a dot in a geometric figure. 
pyramid
pyramid
[名詞]

a solid with a polygonal base and triangular faces that meet at a single point

ピラミッド, ピラミッド

ピラミッド, ピラミッド

Ex: Students modeled a pyramid using cardboard. 
surface
surface
[名詞]

(geometry) any of the two-dimensional faces of a three-dimensional figure

表面, 面

表面, 面

Ex: A cube has six identical square surfaces. 
heart
heart
[名詞]

a shape that consists of two curved lines at the top and a V shape at the bottom

ハート, ハート形

ハート, ハート形

Ex: She drew a heart next to his name in the letter. 
circle
circle
[名詞]

a completely round, plain shape

円, 丸

円, 丸

Ex: She used a compass to draw a small circle on the map. 
square
square
[名詞]

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

正方形, 四角形

正方形, 四角形

Ex: Each tile on the bathroom floor was a small square shape. 
arch
arch
[名詞]

anything with a curved top and parallel sides

アーチ, 穹窿

アーチ, 穹窿

Ex: The old stone bridge featured a beautiful arch that spanned the river. 
zigzag
zigzag
[名詞]

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

ジグザグ, 折れ線

ジグザグ, 折れ線

semicircle
semicircle
[名詞]

any half of a circle

半円, 半円形

半円, 半円形

Ex: The children sat in a semicircle around the teacher during story time. 
spiral
spiral
[名詞]

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

螺旋, 渦巻き

螺旋, 渦巻き

Ex: The staircase in the old mansion featured an elegant spiral that ascended to the upper floors. 
curve
curve
[名詞]

a line or shape that is not straight and bends gradually

曲線, 湾曲した線

曲線, 湾曲した線

Ex: He drew a curve on the paper to represent the arc of the ball's trajectory. 
disk
disk
[名詞]

an object that has a flat, round, and circular shape

ディスク, 円盤

ディスク, 円盤

Ex: She inserted the metal disk into the slot to activate the machine. 
hemisphere
hemisphere
[名詞]

one of the two halves of the Earth, separated by the equator or a meridian

半球, ヘミスフィア

半球, ヘミスフィア

Ex: The Northern Hemisphere experiences winter when the Southern Hemisphere is in summer. 
lobe
lobe
[名詞]

a rounded projection or section forming part of a larger structure

葉, 小葉

葉, 小葉

Ex: The lobe of the ear is soft and fleshy. 
rectangle
rectangle
[名詞]

(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

長方形, 長方形の図形

Ex: In geometry class, they practiced calculating the area of a rectangle. 
triangle
triangle
[名詞]

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

三角形, 三角形状

三角形, 三角形状

Ex: The artist used a triangle shape to create a dynamic composition. 
acute angle
acute angle
[名詞]

an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)

鋭角, 90度未満の角度

鋭角, 90度未満の角度

obtuse angle
obtuse angle
[名詞]

an angle that measures more than 90 degrees but less than 180 degrees

鈍角, 凹角

鈍角, 凹角

Ex: In a triangle, an obtuse angle is one that is greater than 90 degrees but less than 180 degrees. 
right angle
right angle
[名詞]

an angle measuring exactly 90 degrees

直角, 90度の角度

直角, 90度の角度

Ex: To construct a square, each corner must form a perfect right angle. 
straight angle

an angle that measures exactly 180 degrees, which is the same as a straight line

平角, 180度の角度

平角, 180度の角度

axis
axis
[名詞]

a straight line that defines the symmetry or structure of a figure or object

軸, 対称軸

軸, 対称軸

Ex: The artist drew an axis to guide the proportions of the face. 
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