内角

For example, if you draw a triangle on a flat piece of paper the sum of its angles is equal to two right angles (as you know from elementary geometry ).

比如说，如果你在一张平坦的纸张上画一个三角形，它所有内角之和等于两个直角之和（如你从初等几何中所知的）。

In his early work on general relativity, Einstein realized that over cosmic distances space might not conform to the principles of euclidean geometry - that is, the sum of the angles of a very large triangle might not equal exactly 180

爱因斯坦在早期研究广义相对论时就已认识到，在宇宙规模的距离上，空间是不可能符合欧几里得几何的原理的，这就是说，一个非常大的三角形的内角之和不可能正好等于180度。

Find the number of sides of a regular polygon if an interior angle exceeds an exterior angle by 150°.

一正多边形的某内角较其外角大的 150°，求该正多边形边的目。

Example 1: the sum of the interior angles of a polygon is 3 times as large as the sum of exterior angle, how many sides does it have?

范例1：一个多边形的内角和等于它的外角和的3倍，它是几边形？

Remark: the incentre of a triangle is the point of intersection ofthe three interior angle bisectors of the triangle.

注：三角形的内心为该三角形三条内角平分线的交点。

If A is the smallest interior angle of the

A 是这个三角形的最小内角，且

Each interior angle of a regular polygon, when rounded off to the nearest degree, is

某正多边形的每只内角四舍五入至最接近度时为n°。

This paper introduces the technology of boring hole and cutting interior angle using a motive head on the special purpose machine,analyzes the process of calculation and choice of tool holder's spring coil,the action and realization of radial feeding.

介绍了一种在专用机床上采用一个动力头实现镗孔及倒内角的工艺方法；分析了刀杆弹簧的计算选用过程，以及径向进给的动作与实

The same operations are performed iteratively until the smallest interior angle in all the curves is larger than the given threshold value.

该算法首先找到笔画的拐点(最小内角值小于指定阈值)，然后分别寻找拐点两侧曲线段上的拐点，反复执行，直到再也找不到拐点为止。

Its main products are automatically single, biaxial side grinding machine, one after another angle automatic use of grinding machines, automatic interior angle, automatic open machine, welding machines.

其主要产品有自动单、双轴侧面研磨机，全自动先后角兼用研磨机，全自动内角机，自动开齿机，焊接机等。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。