The set square is moved up and down when drawing parallel lines, and the set square and the ruler can be independently used.

在画平行线的时候，只需将三角板上下移 动即可，还可将三角板和直尺分开单独使用。

Can you lend me your set square?

你能借我你的三角尺吗？

He used a set square to check the angle.

他用三角尺检查角度是否正确。

This set square is perfect for students.

这把三角尺非常适合学生使用。

A set square is a common tool for drawing.

三角尺是绘图时常用的工具。

I used a set square to draw a straight line.

我用三角尺画了一条直线。

The eyes are set square in the skull and the outside corners are on a line with the cheeks as viewed from the front.

眼睛位于脑袋的直角上，从前面观察，外眼角落在面颊线上。

Teeth of good size. Jaws strong with a perfect, regular and complete scissor bite, i. e. upper teeth closely overlapping lower teeth and set square to the jaws.

牙齿形状好，强壮的颌，完美的规则的剪刀状咬合，比如上齿紧紧覆盖下齿在口中构成三角形。