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- 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
- One line cuts another at right angles. 一条线与另一条线成直角相交。
- At right angles to a vertical line. 横的与垂直线成90度角的
- A horizontal line or plane at right angles to the plumb. 水平线与铅锤线成直角的水平线或水平面
- 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
- right angle plane 直角平面
- Streets usually intersect at right angles. 马路通常以直角交叉。
- An angle in a semicircle is a right angle. 半圆所对的圆周角是直角。
- A rectangle has four right angles. 一个矩形有四个直角。
- A right triangle has a right angle. 直角三角形有一个角是直角。
- It forms a right angle with the equator. 它与赤道成直角。
- A line cuts another at right angles. 一条线与另一条线相交成直角。
- This is a right angle; that is a sharp angle. 这是一个直角，那是一个锐角。
- Two buffaloes lie back to back along the main section of the hook, their bodies in sharply angled planes. 二水牛沿着主要钩，他们身体在迅速钓鱼的飞机的部分躺背靠背。
- Line A crosses line B at right angles. A线与B线成直角相交。
- This article deals with theoretical analysis of the bifacial lens right angled with strips through twice refraction. 双面正交条纹透镜的聚光倍数较高，光斑均匀，光线经它两次折射后能到达任意指定的方向。
- Right angled corner detection is important for wide range of image processing and machine vision applications,e. 直角角点检测在广泛的图像处理与机器视觉应用领域中具有重要性。
- 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。
- The lines intersect at right angles. 线条垂直相交。
