(中心軸)
軸
an imaginary line in the middle of an object around which the object revolves
(アクシス)
軸 (じく)
(geometry) an arbitrary straight line that passes through the center of a symmetrical object or around which an object spins
(クロス)
十字（じゅうじ）
a mark or an object formed by two short lines or pieces crossing each other
(斜め線)
対角線
a straight line connecting opposite corners of a flat shape at an angle
(ジグザグ形)
ジグザグ
(geometry) a shape that consists of a line alternating its direction to left and right
(直線状のH字型)
バルビス
a straight line that is terminated by a secondary line at each end, resembling the letter H
(射)
線分
a straight line with one endpoint that extends infinitely in the other direction
(セグメント)
線分
a portion of a straight line that is defined by two distinct endpoints
文法情報:
(平行面（へいこうめん）)
平行線（へいこうせん）
a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended
(直交 (ちょっこう))
垂直線 (すいちょくせん)
a line or structure that meets another at a right angle, creating a 90-degree intersection
(接触線（せっしょくせん）)
接線（せっせん）
a straight line that touches a curve or surface at exactly one point, known as the point of tangency
(割線)
セカント
a line that crosses a curve at least at two distinct points
(隣接角の対 (りんせつかくのたい))
線形対 (せんけいたい)
a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees
文法情報:
(鋭い角)
鋭角
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)
文法情報:
(鈍い角（にぶいかく）)
鈍角（どんかく）
an angle that measures more than 90 degrees but less than 180 degrees
(右角 (うかく))
直角 (ちょっかく)
an angle measuring exactly 90 degrees
文法情報:
(直角 (ちょっかく))
平角 (へいかく)
an angle that measures exactly 180 degrees, which is the same as a straight line
文法情報:
(鋭角または鈍角)
斜角
an angle that measures either less or more that 90 degrees
文法情報:
(外角 (がいかく))
反射角 (はんしゃかく)
an angle that measures greater than 180 degrees but less than 360 degrees
文法情報:
(フル回転)
完全な回転
a complete revolution or turn around a fixed point or axis, covering a 360-degree angle
文法情報:
(正角)
正の角度
an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
文法情報:
(逆方向の角度)
負の角度
an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
文法情報:
(隣接する角度)
隣接角
two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line
文法情報:
(平面の角度 (へいめんのかくど))
平面角 (へいめんかく)
the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians
文法情報:
(アーク)
弧（こ）
(geometry) a part of a circle, which is curved
(弧状（こじょう）)
弧（こ）
a curved shape, or something shaped this way
(凹み)
凹面
a shape, line or surface that is hollow and is rounded inward
(円錐断面)
円錐曲線
(geometry) a shape formed when a circular cone is intersected by a plane
(弦月)
三日月
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
(巻き)
カール
something that resembles a spiral or coil
(螺旋)
スパイラル
(geometry) a curved shape or design that gradually winds around a center or axis
(エリプス)
楕円
(geometry) a closed plane curve that has two focal points
(パラボラ)
放物線
(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth
(ハイパーボラ)
双曲線 (そうきょくせん)
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
(単曲線)
単純曲線
a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper
文法情報:
(自己交差曲線)
非単純曲線
a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it
文法情報:
(非閉曲線)
開曲線
a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop
文法情報:
(クローズドカーブ)
閉曲線
a curve that begins and ends at the same point, forming a closed loop
文法情報:
おめでとうございます！ !
38 から Lines, Angles, and Curves 語を学びました。学習と語彙の復習を改善するために、練習を始めましょう！
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