Example sentences of "[noun] are at right [noun] " in BNC.

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1 The cleavage planes are at right angles to one another .
2 When the sun and moon are at right angles to the Earth , as at each half moon , their pulls counteract each other , producing the weak neap tides .
3 If e = √2 the asymptotes are at right angles and the curve is called a rectangular hyperbola .
4 True straight grain occurs when the weft ( crosswise ) and warp ( lengthwise ) threads are at right angles to each other .
5 Except in the southeast corner , the properties in this unit are at right angles to the north-south road , and the overall rectilinear arrangement of the plan is clear .
6 The axes of an ellipse are at right angles .
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