只有在平坦的宇宙中，空间才符合标准的几何规律——三角形的内角和精确地等于180度，平行线永远不相交。
Only in a flat universe does space obey all the standard geometry-class rules-the angles of a triangle add up to exactly 180 degrees and parallel lines never meet.
每个三角形的面积等于拼成的平行四边形面积的。
The area of every triangle equals the area of the parallelogram.
两个完全一样的三角形可以拼成一个平行四边形；
靠旗杆一侧为红色等腰三角形，内有一颗白色七角星；右侧自上而下为黑、白、绿三色的平行宽条。
On one side for the red flag, an isosceles triangle a white seven horns star, The top-down for black, white, green parallel wide.
天琴座由一个包含织女座的有着平行边关系的小三角形组成。
Lyra consists of a little triangle, of which Vega is part, with a little parallelogram attached.
在四层平行平板间并列分布九个PZT微驱动器，每层的三个驱动器摆放在一个正三角形的三个顶点上。
Nine PZT actuators are distributed among four platforms, and in each layer there are three PZT actuators placed on the vertexes of an equilateral triangle.
几何主要不是研究数，而是形，例如三角形，平行四边形和圆，虽然它也与数有关。
Geometry mainly studies hot Numbers but figures such as triangles, parallelograms and circles, though it is related with Numbers.
在调查中，大多数医生喜欢三根平行的螺钉位于三角形的分布。这个方法的原理有很好的阐述。
The majority of surgeons in an international survey preferred 3 parallel cannulated screws in a triangular pattern. 8 The rationale for this approach has been well described.
在调查中，大多数医生喜欢三根平行的螺钉位于三角形的分布。这个方法的原理有很好的阐述。
The majority of surgeons in an international survey preferred 3 parallel cannulated screws in a triangular pattern. 8 The rationale for this approach has been well described.
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