La llanta és recta.

La is the feminine singular definite article in Catalan, equivalent to the in English.

Because llanta is a feminine singular noun, it takes la:

• la llanta = the rim
• una llanta = a rim

So La llanta és recta literally follows the pattern The rim is straight.

You usually learn the gender together with the noun, so it is best to memorize it as la llanta, not just llanta.

In this sentence, you can also tell it is feminine because:

• the article is la
• the adjective is recta, the feminine form

So the whole sentence gives you two clues that llanta is feminine.

És with an accent is the 3rd person singular of the verb ser:

• és = is

So:

• La llanta és recta = The rim is straight

By contrast, es without an accent is a different word, often a reflexive or impersonal pronoun, like oneself / itself / each other depending on context.

The accent matters because it distinguishes two different words.

In Catalan, adjectives usually agree in gender and number with the noun they describe.

Since llanta is feminine singular, the adjective must also be feminine singular:

• masculine singular: recte
• feminine singular: recta
• masculine plural: rectes
• feminine plural: rectes

So:

• la llanta recta
• La llanta és recta

This is different from English, where straight does not change form.

Here recta means straight, not bent or not crooked.

Although words related to recte/recta can sometimes connect to ideas like correct, upright, or proper depending on context, in this sentence it means something like straight.

So for a wheel rim, recta means it is straight or true, not warped.

That is the normal position for many adjectives in Catalan.

So Catalan commonly says:

• la llanta recta

rather than putting the adjective before the noun.

In the full sentence:

• La llanta és recta

the adjective comes after the verb és, just as many predicate adjectives do in English:

• The rim is straight

So this word order is very natural in Catalan.

Normally, no. In a standard sentence like this, you would usually keep the article:

• La llanta és recta

Catalan uses definite articles more regularly than English in many contexts. Leaving out la here would sound incomplete or unnatural.

If you wanted an indefinite meaning, you would use:

• Una llanta és recta = A rim is straight

But for the given sentence, la should stay.

A helpful approximate pronunciation is:

• llanta ≈ LYAN-ta or sometimes closer to YAN-ta, depending on accent and region

The ll sound varies across Catalan-speaking areas:

• in some accents, ll is clearly different from y
• in others, it sounds very similar to y

So do not be surprised if you hear slight regional differences.

A rough English-friendly guide is:

• La llanta és recta ≈ luh LYAN-tuh ez REK-tuh

A few notes:

• la is short and light
• llanta has the stress on the first syllable
• és sounds like ez
• recta has the stress on the first syllable: REK-ta

This is only an approximation, but it is a useful starting point.

This is a very common learner question because Catalan, like Spanish, has both ser and estar.

In this sentence, és recta presents straight as a characteristic or description of the rim.

However, in real usage, estar can also appear when talking about a current state or condition:

• La llanta està recta can sound like The rim is straight now / is in a straight condition

So the difference can be subtle. A simple way to think about it is:

• és recta = describing what it is like
• està recta = emphasizing its present state or condition

The sentence you were given uses és, which is grammatically fine and straightforward for learning adjective agreement.

If you want to say The rims are straight, you would say:

• Les llantes són rectes

Changes:

• la → les
• llanta → llantes
• és → són
• recta → rectes

This shows how Catalan changes several words to match number, not just the noun.