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1·The ball skewed off at a right angle.

球呈直角偏离弹了出去。《牛津词典》

2·A right Angle is an Angle of 90 degrees.

直角为90度。《新英汉大辞典》

3·In order to describe human beings, he should keep the palm of his hand at a right angle to the floor.

为了描述人类，他应该保持手掌与地面成直角。

4·According to scientific results, on Winter solstice, a right angle is formed by the sun and the tropic of carpricorn.

根据科学的结果，在冬至，太阳和南回归线形成了一个直角。

5·A right triangle has a right Angle.

直角三角形有一个角是直角。

6·These two lines form a right Angle.

这两条线成一直角。

7·You are standing at a right Angle to the wall.

你的身体与墙壁成直角。

8·He heated the iron rod and bent it into a right Angle.

他将铁杆烧热，然后将之弯成直角。

9·One is to argue geometrically that you have a right angle in here.

第一种是几何办法，这是一个直角。

10·Begin with the string of length 2 units arranged into a right Angle.

从2个单元长度串开始，安排在一个直角里面。