平行四辺形（へいこうしへんけい、heikoushiへnkeい）
- parallelogram

The Japanese word 平行四辺形 （へいこうしへんけい, _heikōshihenkei_） means "parallelogram" in English. A parallelogram is a four-sided shape (quadrilateral) where the opposite sides are parallel and equal in length. This means the sides never intersect, no matter how far they are extended.

⚫︎その絵は平行四辺形の形をしている。 Translation: That picture is in the shape of a parallelogram. ⚫︎平行四辺形の面積を計算する方法を学びました。 Translation: I learned how to calculate the area of a parallelogram. ⚫︎この図形は平行四辺形です。 Translation: This figure is a parallelogram.

You would use 平行四辺形 in any context where you are discussing or describing a parallelogram, such as in mathematics lessons, geometry problems, architectural discussions, or even art. It's a technical term, so it's appropriate for formal or informal settings, especially where geometry is relevant.

⚫︎The word 平行四辺形 is typically written using: * Kanji: 平行四辺形 * Hiragana (for pronunciation guidance): へいこうしへんけい ⚫︎There are no other common ways to write this word, and the okurigana (the suffix hiragana) are fixed.

There are no direct synonyms for 平行四辺形 in Japanese as it refers to a very specific geometric shape. However, you might use more general terms if you are not being precise, such as 四角形 (_shikakkei_) meaning "quadrilateral" or 図形 (_zukei_) meaning "figure" or "shape".

There isn't a direct antonym for 平行四辺形. The antonym depends on what aspect of the shape you want to contrast. For example: * 不規則な四角形 (_fukisokuna shikakkei_) - irregular quadrilateral (for non-parallelograms) * 長方形 (_chōhōkei_) – rectangle (as a more specific type of parallelogram)

数学の授業で、平行四辺形の性質について勉強しました。 ・Translation: In math class, we studied the properties of parallelograms. ・Explanation: This sentence uses 平行四辺形 in a classroom context, focusing on its properties.

この壁は平行四辺形のタイルで装飾されています。 ・Translation: This wall is decorated with parallelogram tiles. ・Explanation: This sentence illustrates the use of 平行四辺形 in a descriptive way, referring to an architectural element.

The word 平行四辺形 is a compound word formed from: * 平行 (_heikō_) - parallel * 四辺 (_shihen_) - four sides * 形 (_kei_) - shape, form * Therefore, 平行四辺形 literally translates to "parallel four-sided shape".