直角

All perpends are to be strictly true and square and the whole properly bonded together.

所有处必须精确和方正，且整体要粘合妥当。

Line A crosses line B at right angles.

A线与B线成相交。

The hypotenuse is the longest side of a right triangle.

三形的斜边三形中最长的边。

Streets usually intersect at right angles.

马路通常以交叉。

A prismatoid having polygons with the same number of sides as bases, and faces that are parallelograms or trapezoids.

个边相等的平行边形；不的等边平行边形。

A pass route in which the receiver runs downfield for several yards, then cuts at a right angle toward the nearest sideline.

价格沿惯性向前运行一段，最近的边线切入。

The team also noted a hinged flap near the base of the wing, called an Alula, which is deployed at right angles to the wing, which may be being used as a air flow-control device.

这个小组还注意到，翼根附近铰接的副翼，被称为小翼的，对翼成配置，它可能被用来作为空气流量控制装置。