Meanings of 直径
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About 直径
Podcast: 直径
Podcast: 直径
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AI Study Notes for 直径
半径 (bànjìng) — use 直径 when referring to the full width of a circle through its center, not just the distance from the center to the edge.
Think of the character 直 (zhí) as a straight line, and 径 (jìng) as a path. Visualize drawing a straight line through a circle to connect two edges, which helps you remember that '直径' means 'diameter'. The '直' suggests straightness, while '径' can be remembered as a 'path' through the circle.
Be careful to use 直径 specifically in contexts relating to circles or spheres; using it out of context can confuse its meaning. It is more formal, so in casual conversation, people might simply say '圆的宽度' (the width of a circle) instead. Remember that the first tone of 直 can be easily confused with other similar-sounding words.
As an HSK Level 6 word, 直径 connects with other mathematical terms at this level, like 面积 (area) and 半径 (radius). Focus on practicing its usage in sentences related to geometry and measurements to reinforce understanding.
In Chinese culture, geometry and mathematics have historical significance, with ancient Chinese mathematicians making significant contributions to the field. The concept of diameter is essential in various traditional crafts, such as making round objects or designing circular architecture.
Learners often confuse 直径 with 半径, mistakenly using them interchangeably. For example, saying '这个圆的半径是10厘米' when they meant to say the diameter. Always remember that 半径 is half of 直径, not the same.
Pronunciation of 直径
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Component Characters
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Practice writing 直径 stroke by stroke. Watch the animation to learn the stroke order, then try writing it yourself.
Grammar Patterns of 直径
直径 functions as a noun — it names a person, place, thing, or concept. Place it as a subject before the verb (主+谓) or as an object after the verb (谓+宾). Most Chinese nouns require a measure word between the number and the noun (e.g. 一个/三本). The example sentences below show it in action, with practice buttons (Listen, Practice Writing, Practice Speaking) on every line.
Complete the Sentence
圆的____与圆周有相互关系.
The diameter and the circumference of a circle correlate.
Example Sentences for 直径 (3)
Cultural Notes for 直径
In Chinese culture, geometry and mathematics have historical significance, with ancient Chinese mathematicians making significant contributions to the field. The concept of diameter is essential in various traditional crafts, such as making round objects or designing circular architecture.
Frequently Asked Questions about 直径
半径 (bànjìng) refers to the radius, which is half of the diameter. In contrast, 直径 is the full length across the circle.