Here are several descriptions for the WordPress post_tag “平面圖形” (Plane Figures) in Traditional Chinese, offering different levels of detail and intended audience:

**Option 1 (Concise & General):**

> 平面圖形，探索二維空間的基本形狀。

* **Translation:** Plane Figures, exploring the basic shapes of two-dimensional space.
* **Target Audience:** General audience, anyone interested in the topic.

**Option 2 (Slightly More Detailed):**

> 了解平面圖形，包括正方形、長方形、圓形、三角形等，它們的性質、面積和周長。

* **Translation:** Learn about plane figures, including squares, rectangles, circles, triangles, etc., their properties, area, and perimeter.
* **Target Audience:** Students, teachers, or anyone seeking a basic understanding of plane figures.

**Option 3 (Focus on Educational Content):**

> 彙集關於平面圖形的教學資源，包括教學影片、工作紙和練習，助你掌握平面圖形的概念和應用。

* **Translation:** A collection of educational resources on plane figures, including teaching videos, worksheets, and exercises, to help you master the concepts and applications of plane figures.
* **Target Audience:** Teachers, students, and individuals seeking educational materials.

**Option 4 (Emphasizing Visuals):**

> 一起探索各式各樣的平面圖形，透過圖像和例子，更容易理解它們的特性和公式。

* **Translation:** Explore various plane figures together, with images and examples, making it easier to understand their characteristics and formulas.
* **Target Audience:** Anyone who prefers visual learning or for posts that heavily rely on images.

**Option 5 (More Technical/Specific):**

> 針對平面圖形的深入研究，包括其定義、重要屬性 (如對稱性、邊數)、以及在幾何學和日常生活中的應用。 可能也會包括相關公式和進階概念。

* **Translation:** In-depth study of plane figures, including their definitions, important properties (such as symmetry, number of sides), and applications in geometry and daily life. May also include relevant formulas and advanced concepts.
* **Target Audience:** More advanced students, mathematicians, or for posts focusing on deeper geometric principles.

**How to choose the best description:**

* **Consider your target audience:** Who are you trying to reach with your blog posts?
* **Reflect the content of the blog posts:** Does your content focus on educational resources, visual examples, or in-depth analysis?
* **Keep it concise:** WordPress descriptions are usually displayed on the tag archive page or search results, where space is limited.
* **Use keywords:** Include relevant keywords to improve SEO. “平面圖形” (Plane Figures) is the primary keyword, but consider adding related terms like “幾何” (Geometry), “面積” (Area), “周長” (Perimeter), “形狀” (Shape) if appropriate.

In the WordPress backend, you’ll usually find a description field for tags when you edit them. Choose the option that best suits your needs and paste it into that field.