# Vocabulary: Punctuation Marks, Keyboard and Math Symbols in English

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Learn punctuation marks, keyboard and math symbols in English. Punctuation marks are symbols used in written language to indicate the structure and organization of sentences.

Contents

## Punctuation Marks, Keyboard and Math Symbols

### Punctuation Marks

•   period (US) or full stop (UK)
•   comma
•   exclamation mark
•   question mark
•   colon
•   semicolon
• “ ”   quotation marks
• ‘ ’   single quotes
• ( )   parentheses
• { }   curved brackets
• [ ]   square brackets
• @    “at” sign or symbol
• *   asterisk
•   tilde
• /   slash
•    dash
• #   pound sign
• \$   dollar sign
• &   and or ampersand

### Math Symbols

• Plus (+)
• Minus ()
• Multiplication (x or *)
• Division (÷ or /)
• Equal (=)
• Not equal (!= or <>)
• Greater than (>)
• Less than (<)
• Greater than or equal to (>=)
• Less than or equal to (<=)
• Square root ()
• Cube root (3√ or )
• Percent (%)
• Permille ()
• Infinity ()
• Pi (π)
• Exponent (^ or **)
• Modulo (mod or %)
• Factorial (!)
• Integral ()
• Derivative (d/dx or ∂/∂x)
• Summation (Σ)
• Product (Π)
• Limit (lim)
• Absolute value (| |)
• Parentheses ()
• Brackets []
• Braces {}
• Union ()
• Intersection ()
• Dot product (·)
• Cross product (×)
• Angle ()
• Degree (°)
• Logarithm (log or ln)
• Natural logarithm (ln)
• Sine (sin)
• Cosine (cos)
• Tangent (tan)
• Secant (sec)
• Cosecant (csc)
• Cotangent (cot)
• Arc sine (arcsin or sin^-1)
• Arc cosine (arccos or cos^-1)
• Arc tangent (arctan or tan^-1)
• Hyperbolic sine (sinh)
• Hyperbolic cosine (cosh)
• Hyperbolic tangent (tanh)
• Inverse (^-1)

#### Angles Vocabulary

Angle is a measure of the amount of rotation between two lines or planes.

• Vertex: The point where two lines or rays of an angle meet.
• Ray: One of the two lines or segments that form an angle.
• Acute angle: An angle that measures less than 90 degrees.
• Right angle: An angle that measures exactly 90 degrees.
• Obtuse angle: An angle that measures more than 90 degrees but less than 180 degrees.
• Straight angle: An angle that measures exactly 180 degrees.
• Reflex angle: An angle that measures more than 180 degrees but less than 360 degrees.
• Complementary angles: Two angles whose sum is 90 degrees.
• Supplementary angles: Two angles whose sum is 180 degrees.
• Adjacent angles: Two angles that share a common vertex and a common side but do not overlap.
• Linear pair: A pair of adjacent angles whose non-common sides are opposite rays.
• Conjugate angles: Two angles that share the same initial and terminal sides but face in opposite directions.
• Central angle: An angle that has its vertex at the center of a circle.
• Inscribed angle: An angle formed by two chords of a circle that share an endpoint on the circle.
• Interior angle: An angle that is inside a shape or figure.
• Exterior angle: An angle that is outside a shape or figure.
• Transversal: A line that intersects two or more lines at different points.
• Alternate interior angles: Two angles formed by a transversal and two intersecting lines that are on the opposite side of the transversal.
• Alternate exterior angles: Two angles formed by a transversal and two intersecting lines that are on the same side of the transversal.
• Corresponding angles: Two angles formed by a transversal and two intersecting lines that are in corresponding positions.
• Vertical angles: Two angles formed by two intersecting lines that are opposite each other and are always congruent.

#### Line Vocabulary

A line is a geometric object that extends infinitely in both directions.

• Ray: A line that has one endpoint and extends infinitely in one direction.
• Line segment: A line that has two endpoints and is of finite length.
• Intersecting lines: Two or more lines that cross each other at a single point.
• Parallel lines: Two or more lines that never intersect and are always the same distance apart.
• Perpendicular lines: Two lines that intersect at a right angle.
• Transversal: A line that intersects two or more lines at different points.
• Angle: The measure of the amount of rotation between two lines or planes.
• Point: A location in space that has no size or dimension.
• Slope: The rate at which a line rises or falls.
• Y-intercept: The point at which a line crosses the y-axis.
• X-intercept: The point at which a line crosses the x-axis.
• Linear equation: An equation in which the highest power of the variable is 1.
• Linear function: A function that can be represented by a linear equation.
• Distance: The length of the shortest path between two points.
• Midpoint: The point that is halfway between two given points.
• Endpoint: The point at which a line segment or ray begins or ends.
• Collinear points: Three or more points that lie on the same line.
• Congruent lines: Two or more lines that have the same length.
• Bisector: A line, plane or point that cuts another line segment into two congruent segments.
• Line of symmetry: A line that divides a shape into two congruent parts, or mirror images of each other.

## Punctuation Marks, Keyboard and Math Symbols | Image

Punctuation Marks

Math Symbols

Paul Phillips

Tuesday 24th of May 2022

when I try to describe computer language , it helps to know the correct names , a horizontal squiggle is a tilde

UWIMPUHWE Desire

Thursday 25th of November 2021

Welcome me

george wilson

Thursday 26th of March 2020

Yes, content.

Hector

Monday 18th of March 2019

Excelent

hardik

Saturday 24th of March 2018

send me data