Colors and Shapes - Lines, Angles, and Curves
Read this lesson to learn the names of some lines, angles, and curves in English, such as "ray", "acute angle" and "arc".
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the central point or line around which an object turns
a straight line that defines the symmetry or structure of a figure or object
a mark or an object formed by two short lines or pieces crossing each other
a straight line connecting opposite corners of a flat shape at an angle
a straight line that is terminated by a secondary line at each end, resembling the letter H
a straight line that starts at a point and extends infinitely in one direction
a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended
a line or structure that meets another at a right angle, creating a 90-degree intersection
a straight line that touches a curve or surface at exactly one point, known as the point of tangency
a line that crosses a curve at least at two distinct points
a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)
an angle that measures more than 90 degrees but less than 180 degrees
an angle measuring exactly 90 degrees
an angle that measures exactly 180 degrees, which is the same as a straight line
an angle that measures either less or more that 90 degrees
a complete revolution or turn around a fixed point or axis, covering a 360-degree angle
an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line
the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians
(geometry) a part of a circle, which is curved
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
something that resembles a spiral or coil
(geometry) a curved shape or design that gradually winds around a center or axis
(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
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper
a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it
a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop
| Colors and Shapes | |||
|---|---|---|---|
| Lines, Angles, and Curves | Words Related to Shapes | ||
