The only thing I can remember from school maths is that the angles of a triangle add up to 180 degrees!
我从读书时的数学里唯一能记得的东西是一个三角形的内角和是180度。Surfaces on which the sum of angles in a triangle is less than 180 degrees look like leaves of kale.
三角形内角之和小于180度的面，看上去就像是甘蓝的叶子。Up to a certain sum of the interior angles on one side of the transversal the two lines might indeed meet .
截线一侧两内角到达一定的和数，两直线可能一定相交。We continue to propose a localized algorithm which can also handle queer condition, but using concept of graphic interior angle instead.
该算法使用图形内角的概念，对奇异的分析更为简洁，从另一个角度解决了奇异问题。Open book - Same as a dihedral or inside corner. Two panes of rock join in an acute or obtuse corner that faces left or right.
两面角或者内角。两块岩石会聚成锐角或者钝角，向左或者向右。Before, he mostly kept his fastball away to left-handers, but today he tried to throw it inside.
以前他大多对左打者投速球，但他今天试著塞内角。The following code sample uses Round to assist in the computation of the inner angles of a given trapezoid.
下面的代码示例使用Round来帮助计算给定梯形的内角。Lefties also appear to be vulnerable up and in, but right handed pitchers haven't targeted that area yet.
左打击者的弱点区也在内角高球，但是右投手还没能准确的投入这个区域。Consistent systems of geometry were possible in which the internal angles of triangles summed to more than 180 degrees, or even to fewer.
有可能存在一些一致的几何体系，其中三角形的内角之和可能超过180度，甚至可能小于180度。