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1·In fact, it is a right-angled triangle.

事实上，那是一个直角三角形。

2·Given the lengths of the two sides of a right-angled triangle, we can find out the length of a third side.

如果晓得直角三角形两个边的长度，咱们就能求出第三边的长度。

3·The protection appliance has a wedge-shaped fixture block with a side surface similar to a right-angled triangle;

它有一个侧面近似 为直角三角形的楔形卡块；

4·A high-rise building is analysed structure which facade was a right-angled triangle and plan was long and narrow.

对三角型立面，扁长型平面高层建筑结构体系的设计问题进行了研究。

5·This paper brought forward a new kind of power supply whose outputting current pulse is positive right-angled triangle.

本课题研制了一台采用三角形电流脉冲输出的单极性微弧氧化试验电源。

6·The results show that the isosceles right-angled triangle ribs have the highest anti-erosion ability among the three different kinds of ribs.

结果表明在三种不同几何形状的肋条中，等腰直角三角形肋条具有最高的防磨效率。

7·Pythagoras, who is remembered for his theorem about the sides of a right-angled triangle, lived around 540 BC, while Euclid, the best known geometer of the ancient world, lived around 300 BC.

生活在公元前540年左右的毕达哥拉斯，便提出了闻名于世的关于直角三角形各边的 勾股定理 。古代最知名的几何学家欧几里得生活在公元前300年左右。

8·The calculation of right angled triangle weir-type open channel flowmeter is described. A high precision experiential flow calculating formula is given.

论述了直角三角形堰式明渠流量计算问题，提出了一种高精度流量计算经验公式。

9·The three antennas which receive VHF impulses emitted by a lightning discharge are placed on the vertices of a right-angled isosceles triangle with perpendicular sides 120 meters in length.

三个接收天线（接收闪电放电辐射的超高频脉冲）分别放在一个垂直边长为120米的直角等腰三角形的顶点，由到达天线的时间差来计算接收到的闪电脉冲的方向。