right angle

angle of 90 直角; 90 度角: at right angles/at a right angle (to the wall) （与墙）成直角. =>illusat angle 见angle插图. =>App 5 见附录5. `right-angledadj having/consisting of a right angle 有[成]直角的: a right-angled triangle 直角三角形 * a right-angled bend in the road 道路上成90度的转弯.

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