锐角的英文：
a sharp angle
acute angle
an acute angle

This is a right angle; that is a sharp angle.
这是一个直角，那是一个锐角。

Balance V sit
锐角坐平衡

You can get accurate trisection of an acute angle
你可以得到锐角精确的三等分。

A figure with four equal sides forming two inner obtuse angles and two inner acute angles; a rhombus or lozenge.
菱形(物):一种带有四个等边构成两个内钝角和两个锐角的图形;菱形或菱形物.

This is a sharp shave.
这是把锋利的剃刀。

The piano is sharp.
钢琴的音偏高了。

This cheese has a sharp flavor.
这种乳酪的味道很刺激。

The angle of incidence equals the angle of reflection.
入射角等于反射角。

angle of heel in tur
回旋倾侧角

initial incidence angle
初始入射角

The professor is an acute observer.
那教授是位敏锐的观察家。

There's an acute shortage of rain.
这里严重缺雨。

This area has an acute shortage of water.
这个地方缺水严重。