Çizgi çekerken cetvel kullanırsan başlık daha düzgün olur.

Yes, çekmek often means to pull, but in Turkish it is also used in some fixed expressions.

Çizgi çekmek is a very common expression meaning to draw a line or to make a line. So in this sentence, çizgi çekerken means while drawing a line.

A learner might expect çizgi çizmek, and that can also make sense in some contexts, but çizgi çekmek is very natural and idiomatic.

Çekerken means while drawing or when drawing.

It is built from:

• çek- = verb root, draw/pull
• -er = a present/habitual-type form here
• -ken = while / when

So:

• çekerken = while (someone) draws / while drawing

In this sentence:

• Çizgi çekerken = while drawing a line

The suffix -ken is very common for giving background time information:

• yürürken = while walking
• konuşurken = while speaking
• yazarken = while writing

Kullanırsan means if you use.

It breaks down like this:

• kullan- = use
• -ır = aorist/general form
• -sa = conditional if
• -n = you (singular)

So:

• kullanırsan = if you use

This is a very common Turkish way to make if clauses.

Examples:

• Gidersen = if you go
• Yaparsan = if you do
• Okursan = if you read

Yes, and that is completely normal in Turkish.

The sentence combines:

• a time/background clause: çizgi çekerken = while drawing a line
• a condition clause: cetvel kullanırsan = if you use a ruler

Together, they mean something like:

• While drawing a line, if you use a ruler, ...

So one part tells when the action happens, and the other tells under what condition the result happens.

Turkish often puts this kind of information before the main clause.

Because Turkish usually does not need subject pronouns when the verb ending already shows the person.

In kullanırsan, the ending already tells us the subject is you (singular).

So Turkish does not need to say:

• sen cetvel kullanırsan

It can, but usually sen is omitted unless the speaker wants emphasis or contrast.

This is very common in Turkish:

• Geliyorum = I am coming
• Gidiyorsun = you are going
• Yaparız = we do / we will do

Başlık usually means title or heading.

In this sentence, it most likely means the heading/title on the page, not the line itself. The idea is probably that using a ruler when drawing a line makes the heading look neater or more orderly—perhaps because the line is under or near the heading.

So başlık is not a grammatical subject like headline in the newspaper sense only; it can also be the title written at the top of notes, homework, or a page.

Literally:

• daha = more
• düzgün = neat / straight / proper / even / tidy
• olur = becomes / is / will be

So daha düzgün olur means something like:

• it becomes neater
• it looks more orderly
• it will be straighter/neater

The exact English wording depends on context. Since this sentence is about drawing a line with a ruler, düzgün suggests something visually neat, straight, and tidy.

Olur is the aorist form of olmak and is often used for:

• general truths
• usual results
• advice
• predictable outcomes

So here başlık daha düzgün olur means something like:

• the heading comes out neater
• the heading will be neater
• the heading looks better

It does not have to mean a distant future. It expresses a normal result of the condition.

Using olacak would sound more specifically future-oriented, while olur sounds more like general advice:

• If you do this, the result is this.

The structure is:

• Çizgi çekerken = while drawing a line
• cetvel kullanırsan = if you use a ruler
• başlık daha düzgün olur = the heading becomes neater

So the sentence follows a very typical Turkish pattern:

background information + condition + main result

A rough literal order in English would be:

• While drawing a line, if you use a ruler, the heading becomes neater.

Turkish usually puts the main result at the end, and the supporting clauses before it.

In this sentence, yes, cetvel clearly means ruler.

In some contexts, cetvel can also refer to a table or chart, especially in more formal or older usage. But with kullanmak and the context of drawing a line, the meaning is definitely ruler as in the school tool.

So here:

• cetvel kullanırsan = if you use a ruler