pattern

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".

review-disable

Review

flashcard-disable

Flashcards

spelling-disable

Spelling

quiz-disable

Quiz

Start learning
Words Related to Colors and Shapes
axis

an imaginary line in the middle of an object around which the object revolves

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"axis\"
axis

(geometry) an arbitrary straight line that passes through the center of a symmetrical object or around which an object spins

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"axis\"
cross

a mark or an object formed by two short lines or pieces crossing each other

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"cross\"
diagonal

a straight line connecting opposite corners of a flat shape at an angle

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"diagonal\"
zigzag

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"zigzag\"
balbis

a straight line that is terminated by a secondary line at each end, resembling the letter H

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"balbis\"
ray

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"ray\"
line segment

a portion of a straight line that is defined by two distinct endpoints

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"line segment\"
parallel

a pair of geometric figures, such as lines or planes, that do not meet or intersect, no matter how far they are extended

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"parallel\"
perpendicular

a line or structure that meets another at a right angle, creating a 90-degree intersection

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"perpendicular\"
tangent

a straight line that touches a curve or surface at exactly one point, known as the point of tangency

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"tangent\"
secant

a line that crosses a curve at least at two distinct points

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"secant\"
linear pair

a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"linear pair\"
acute angle

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"acute angle\"
obtuse angle

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"obtuse angle\"
right angle

an angle measuring exactly 90 degrees

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"right angle\"
straight angle

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"straight angle\"
oblique angle

an angle that measures either less or more that 90 degrees

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"oblique angle\"
reflex angle

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"reflex angle\"
full rotation

a complete revolution or turn around a fixed point or axis, covering a 360-degree angle

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"full rotation\"
positive angle

an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"positive angle\"
negative angle

an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"negative angle\"
adjacent angles

two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"adjacent angles\"
plane angle

the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"plane angle\"
arc

(geometry) a part of a circle, which is curved

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"arc\"
arc

a curved shape, or something shaped this way

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"arc\"
concavity

a shape, line or surface that is hollow and is rounded inward

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"concavity\"
conic section

(geometry) a shape formed when a circular cone is intersected by a plane

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"conic section\"
crescent

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"crescent\"
curl

something that resembles a spiral or coil

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"curl\"
spiral

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"spiral\"
ellipse

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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"ellipse\"
parabola

(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

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"parabola\"
hyperbola

a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"hyperbola\"
simple curve

a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"simple curve\"
non-simple curve

a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"non-simple curve\"
open curve

a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"open curve\"
closed curve

a curve that begins and ends at the same point, forming a closed loop

[noun]
daily words
wordlist
Close
Sign in
Definition & Meaning of \"closed curve\"
LanGeek
Download LanGeek app