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an imaginary line in the middle of an object around which the object revolves
軸, 想像上の線
(geometry) an arbitrary straight line that passes through the center of a symmetrical object or around which an object spins
軸
(geometry) a straight line that joins the opposite corners of a flat shape at an angle
対角線
(geometry) a shape that consists of a line alternating its direction to left and right
ジグザグ, ジグザグ（幾何学的に）
a straight line that is terminated by a secondary line at each end, resembling the letter H
バルビス, H型の線
a portion of a straight line that is defined by two distinct endpoints
線分, 線の部分
(mathematics) any of the pair of geometric figures such as lines or planes which do not meet or intersect
平行線
a line or structure that meets another at a right angle, creating a 90-degree intersection
垂線, 直交
a straight line that touches a curve or surface at exactly one point, known as the point of tangency
接線
a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees
線形対
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)
鋭角, acute angle
an angle that measures exactly 180 degrees, which is the same as a straight line
直角, 平面角
an angle that measures greater than 180 degrees but less than 360 degrees
反射角, 180度を超える角
a complete revolution or turn around a fixed point or axis, covering a 360-degree angle
完全な回転, 完全な革命
an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
正の角, 反時計回りに測定された角
an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
負の角度, 時計回りに測定された角度
two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line
隣接角, 隣接する角
the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians
平面角, 平面的な角度
(geometry) a shape formed when a circular cone is intersected by a plane
円錐曲線
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, クレセント
(geometry) a curved shape or design that gradually winds around a center or axis
スパイラル
(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
放物線
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
双曲線
a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper
単純な曲線
a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it
非単純曲線, 自己交差曲線
a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop
開いた曲線, 閉じていない曲線
a curve that begins and ends at the same point, forming a closed loop
閉じた曲線, 閉曲線
