A1 noun Formal

perpendicular

/ˌpɜːrpənˈdɪkjələr/

A perpendicular is a line that meets or crosses another line at a 90-degree angle. It is used in science and math to describe two lines that are perfectly square to each other.

Exemplos

3 de 5
1

The carpenter used a tool to make sure the wall was a perfect perpendicular to the floor.

The carpenter used a tool to ensure the wall was at a 90-degree angle to the floor.

2

In the diagram, please draw a perpendicular from point A to the base line.

In the drawing, please draw a line at a right angle from point A to the bottom line.

3

You need to hold the camera at a perpendicular to the ground for this shot.

You need to hold the camera straight up at a right angle to the ground.

Família de palavras

Substantivo
perpendicular, perpendicularity
Advérbio
perpendicularly
Adjetivo
perpendicular
Relacionado
perpendicularity
💡

Dica de memorização

Look at the capital letter 'T'. The vertical line is perpendicular to the horizontal line at the top.

Quiz rápido

To create a perfect square, you must draw a line that is ______ to the base.

Correto!

A resposta correta é: perpendicular

Exemplos

1

The carpenter used a tool to make sure the wall was a perfect perpendicular to the floor.

everyday

The carpenter used a tool to ensure the wall was at a 90-degree angle to the floor.

2

In the diagram, please draw a perpendicular from point A to the base line.

formal

In the drawing, please draw a line at a right angle from point A to the bottom line.

3

You need to hold the camera at a perpendicular to the ground for this shot.

informal

You need to hold the camera straight up at a right angle to the ground.

4

The theorem requires us to calculate the length of the perpendicular dropped from the vertex.

academic

The math rule requires us to find the length of the 90-degree line coming down from the top corner.

5

Our architectural plan shows a perpendicular connecting the main hall to the east wing.

business

Our building plan shows a line at a right angle connecting the main hall and the east section.

Família de palavras

Substantivo
perpendicular, perpendicularity
Advérbio
perpendicularly
Adjetivo
perpendicular
Relacionado
perpendicularity

Colocações comuns

drop a perpendicular draw a line straight down at a 90-degree angle
perpendicular to at a right angle to something else
strictly perpendicular exactly at a 90-degree angle
perpendicular line a line that meets another at 90 degrees
near perpendicular almost at a right angle

Frases Comuns

at a perpendicular

positioned at a 90-degree angle

out of perpendicular

not straight or not at a right angle

the perpendicular

the vertical line in a geometric construction

Frequentemente confundido com

perpendicular vs parallel

Parallel lines never touch, while perpendicular lines cross at exactly 90 degrees.

perpendicular vs vertical

Vertical means straight up and down relative to the earth; perpendicular can be at any orientation as long as it is 90 degrees to another line.

📝

Notas de uso

While 'perpendicular' is often used as an adjective, as a noun it refers specifically to a line that is at a right angle to another. It is very common in geometry and construction contexts.

⚠️

Erros comuns

Learners often use 'perpendicular' when they simply mean 'vertical' or 'straight'. Remember it always describes a relationship between two lines.

💡

Dica de memorização

Look at the capital letter 'T'. The vertical line is perpendicular to the horizontal line at the top.

📖

Origem da palavra

From the Latin 'perpendicularis', referring to a plumb line used by builders to find a vertical direction.

Padrões gramaticais

Countable noun Often followed by the preposition 'to' Used with the definite article 'the' in geometry
🌍

Contexto cultural

The concept of the perpendicular is foundational to global architecture, ensuring that buildings stand stable and upright.

Quiz rápido

To create a perfect square, you must draw a line that is ______ to the base.

Correto!

A resposta correta é: perpendicular

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