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1 Markets I: The Ecosystem and Exchange-Traded Markets市场在线 2 Markets II: Rates, FX and Credit市场在线 3 Markets III: Commodities, Energy and Crypto市场在线 4 Quantitative Methods方法在线 5 Derivatives and Volatility衍生品在线 6 Rates, Credit, XVA and Risk利率、信用与风险在线 7 Research Craft: Predictors, Backtests, Measurement, Portfolios研究在线 8 Strategies I: Equities and Futures策略在线 9 Strategies II: Volatility, Relative Value, Macro and the Bank Desks策略在线 10 Microstructure and Execution交易执行在线 11 Market Making and High-Frequency Trading做市在线 12 Machine Learning for Markets机器学习在线 13 Low-Latency Software技术在线 14 Networks, Hardware and Trading Infrastructure技术在线 15 Research, Data and Risk Platforms技术在线 16 The Desk and the Firm公司运营在线 17 The Industry: Firms, Roles and Careers职业发展在线 18 Interviews I: Maths, Probability and Speed职业发展在线 19 Interviews II: Markets, Trading Games and the Final Round职业发展在线 20 Interviews III: Code职业发展在线

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Mathematics · 术语表

什么是 Polygon？

又称： vertex · quadrilateral · pentagon · hexagon · octagon

Definition 26.4 Primary & Middle School Mathematics · 第 26 章 — Lines and Polygons

A polygon is a closed figure whose border is made of straight segments, its sides; the corner points are the vertices. Polygons are named by their number of sides: triangle ( $3$ ), quadrilateral ( $4$ ), pentagon ( $5$ ), hexagon ( $6$ ), octagon ( $8$ ).

The polygon family (the pentagon and hexagon drawn here are regular: equal sides and equal corners). A circle is not a polygon: its border is not made of segments. — The polygon family (the pentagon and hexagon drawn here are regular: equal sides and equal corners). A circle is not a polygon: its border is not made of segments.

示例

Example 26.5 (Describing a polygon)

A useful game: describe a figure so precisely that a classmate can redraw it without seeing it. “A quadrilateral $ABCD$ with $AB = 5$ cm, the angle at $A$ right, $AD = 3$ cm …” — vocabulary is what makes the message work.

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