An angle of 90 degrees is called a right angle.

九十度的角叫做直角。

This, I'm assuming is a right angle.

这个是直角。

So this right over here is a right angle.

所以现在画的这个角就是一个直角。

They're carefully aligned edge to edge at a right angle.

它们呈直角严丝合缝地对齐。

Your knees should be at a right angle with your feet flat on the floor.

你的膝盖应在正确的角度 且脚掌平放接触地面。

Leon is always walking with his hand cocked at a right angle, like this, y'know.

利昂走路的时候也总是把他的手绷成直角，就像这样。

The two lines on the left intersect each other at a right angle which is 90 degrees.

左边的两条线以90度的直角相交。

This is a right angle, so this is also 30.

这是直角， 所以也是 30。

A " right angle" is this square here, it means 90 degrees.

一个“直角” 就是这里的这个正方形， 就是90度的意思。

Mommy's been sleeping at a right angle all night.

妈妈一晚上都是一个姿势睡的觉。

If it's not a right angle, it is a wrong angle.

如果不是正确的角度 那就是错误的角度。

If it's not a right angle, it is a wrong angle.

如果不是直角, 就是斜角。

" Longitude" are lines that are " perpendicular, " they're at a right angle to latitude lines.

“经度”是“垂直”的线，它们与纬度线成直角。

When you draw a vector, it's a lot like the HYPOTENUSE of a right angle triangle.

当你画一个箭头时，它很像 直角三角形的斜边。

But what if we point the cones so that the mirror is now at a right angle to the plane of symmetry?

但是如果我们把锥体指向镜面，使镜面与对称面成直角呢？

Now, here we have a perpendicular line, means straight at 90 degrees or at a right angle to another line.

现在，这里我们有一条垂直线，意思是与另一条线成 90 度角或直角。

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，他应该让手掌与地板成直角。

Some garderobes had wooden doors or were built at the end of a narrow corridor at a right angle  to obscure the view.

有些衣橱有木门，或者建在狭窄走廊的尽头，呈直角以遮挡视线。

For example, the isosceles or the scalene, or really any much either of these two can also be a " right angle triangle" .

例如，等腰或斜角，或者这两者中的任何一个都可以是“直角三角形”。

So you find any doorframe and you put your arm at a right angle like this, stick it to the doorframe, and then turn and stretch.

所以你找到任何一个门框然后你把你的手臂像这样成直角，贴在门框上，然后转动并伸展。