您要查找的是不是：
- A right triangle has a right angle. 直角三角形有一个角是直角。
- CBAbe a right-angled triangle with right angle CAB. 为一直角三角形,其直角为。
- The side of a right triangle opposite the right angle. 直角三角形的相对于直角的边。
- The hypotenuse of a right-angled triangle is the side opposite its right angle. 斜边是直角三角形直角相对的那条边。
- One line cuts another at right angles. 一条线与另一条线成直角相交。
- Four incident beams were arranged to be an isosceles triangle with a right angle and focused by a single front lens. 四束入射光布置成等腰直角三角形,用一个前透镜聚焦。这种光学布置光能利用率高,并能适用于近壁处流速测量。
- An angle in a semicircle is a right angle. 半圆所对的圆周角是直角。
- It forms a right angle with the equator. 它与赤道成直角。
- This is a right angle; that is a sharp angle. 这是一个直角，那是一个锐角。
- right angled triangle 直角三角形
- A four-sided plane figure with four right angles. 矩形，长方形具有四个边的方形，有四个直角
- At right angles to a vertical line. 横的与垂直线成90度角的
- An angle of 90°is called a right angle. 九十度角称为直角。
- The ball skewed off at a right angle. 球呈直角偏离弹了出去。
- It is also compatible with right angle plugs. 它也和直角插头兼容。
- Intersecting at or forming right angles. 成直角的，垂直的交叉成直角的，或形成直角的
- An acute angleis an angle less than a right angle. 小于直角的角叫做锐角.
- This is not a right angle, but an acute one. 这不是直角,而是锐角。
- There are 90 degrees in a right angle. 直角为九十度。
- These two lines form a right angle. 这两条线成一直角。
