# Bagua (八卦)

> The bagua are the eight three-line trigrams of the I Ching: Qian, Kan, Gen, Zhen, Xun, Li, Kun and Dui. Each is built from solid (yang) and broken (yin) lines; on the compass, each trigram governs a 45° sector.

- Vietnamese: Bát quái
- English: Bagua
- Chinese: 八卦
- Chinese characters: 八卦
- Also called: Bát quái · Eight trigrams

## Explanation

In the Later Heaven arrangement used for homes: Kan is north, Gen northeast, Zhen east, Xun southeast, Li south, Kun southwest, Dui west and Qian northwest.

Each trigram contains three of the 24 mountains and carries one of the five elements: Kan Water, Li Fire, Zhen and Xun Wood, Qian and Dui Metal, Gen and Kun Earth.

Classical source: I Ching — Great Commentary (Xici) and Discussion of the Trigrams (Shuo Gua)

## How Home Check uses it

After setting polarity, Home Check lays the bagua ring over the plan so each room knows its trigram and sector. — [Feng shui check & fix](https://myhomecheck.ai/feng-shui)

## Related terms

- [Early Heaven and Later Heaven bagua](https://myhomecheck.ai/learn/glossary/early-and-later-heaven-bagua): Early Heaven and Later Heaven are two arrangements of the eight trigrams around a circle.
- [Nine palaces (Lo Shu)](https://myhomecheck.ai/learn/glossary/nine-palaces-lo-shu): The nine palaces are a 3×3 grid that divides a plan into eight palaces around a centre palace.
- [24 Mountains](https://myhomecheck.ai/learn/glossary/twenty-four-mountains): The 24 mountains divide the 360° compass into 24 equal sectors of 15°, each called a mountain.

## Questions

### Is the compass bagua the same as a bagua mirror over a door?

Same eight trigrams, but on the compass the bagua is a coordinate system for reading direction; a bagua mirror is a folk remedy, not a measuring tool.

### Where is the bottom line of a trigram on the compass?

The bottom line sits toward the centre and the top line toward the rim — trigrams read from the inside out.

---  
Original page: https://myhomecheck.ai/learn/glossary/bagua  
Other languages: [Tiếng Việt](https://myhomecheck.ai/vi/tri-thuc/thuat-ngu/bat-quai/index.md) · [中文](https://myhomecheck.ai/zh/learn/glossary/bagua/index.md)  
Updated: 2026-10-21