acute angle的音標是[??"kju?t] ，基本翻譯是銳角，速記技巧是元音字母u加k音標。

Acute angle 的英文詞源為拉丁語 acu-，意為“尖銳的”，因此，acute angle 指的是銳角。

變化形式：在英語中，acute angle 的變化形式為 angle，angle 是可數名詞，其復數形式為 angles。

相關單詞：

1. acute-angle（銳角）

2. acute-angled（銳角的）

3. acute-angled triangle（銳角三角）

4. acute-angle measurement（銳角測量）

5. acute-angle ruler（銳角尺）

6. acute-angle triangle（銳角三角形）

7. acute-angle device（銳角裝置）

8. acute-angle lens（銳角透鏡）

9. acute-angle corner（銳角角）

10. acute-angle surface（銳角面）

這些單詞都與銳角有關，用于描述和測量銳角的各種情況。

常用短語：

1. acute angle triangle

2. acute angle quadrilateral

3. acute angle polygon

4. acute-angled angle

5. acute-angled figure

6. acute-angled shape

7. acute-angled surface

例句：

1. The acute angle of the triangle is 60 degrees.

2. The acute angles of the square add up to 360 degrees.

3. The acute angles of the pentagon are all equal.

4. The acute-angled angle of the circle is 180 degrees.

5. The acute-angled figure is a perfect geometric shape.

6. The acute-angled surface is a three-dimensional geometric object.

7. The acute angles of the rectangle are 90 degrees each.

英文小作文：

Title: The Importance of Acute Angles in Geometry

Geometry is a fundamental subject that teaches us how to think logically and creatively about shapes and figures. One of the most important angles in geometry is the acute angle, which plays a crucial role in understanding various geometric shapes and figures.

Acute angles are angles that are less than 90 degrees, and they are found in triangles, squares, pentagons, hexagons, and other polygons and polyhedra. Understanding acute angles helps us to understand how these shapes fit together and how they relate to each other. For example, in a triangle, the sum of the acute angles must add up to 180 degrees, just like in a square or rectangle.

Acute angles also help us to understand how to measure angles in three dimensions, which is essential for understanding solid objects like cubes, spheres, and cylinders. Understanding acute angles also helps us to understand how to draw perfect geometric figures and shapes, which is essential for creating beautiful artworks and designs.

In conclusion, acute angles are an essential part of geometry that teaches us how to think logically and creatively about shapes and figures. Understanding acute angles helps us to develop mathematical skills that are essential for everyday life and for further education.