直角

Be ? There are two same right-angled triangles , who wants to try ?

这是两个完全一样的直角三角形，请同学们动手拼一拼。

Prepare a piece of paper, and fold it right-angled the triangle.

准备一张纸，把它折成一个直角三角形。

Expressed as a ratio of the sides of right-angled triangle containing the ''.

直角三角形各角的函数是用各边的比来表示的。

Square on longest side of a right-angled triangle equals stun of the square s on other two sides.

直角三角形最长边的平方等于另两边的平方的和。

Square on longest side of a right-angled triangle equals stun of the squares on other two side s.

直角三角形最长边的平方等于另两边的平方的和。

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

要是知道直角三角形两个边的长度，我们就能求出第三边的长度。

Square on longest side of a right-angled triangle equals stun of the squares on other two sides.

直角三角形最长边的平方等于另两边的平方的和。

Fold but do not fold into a right-angled triangle the intermediate is not it?

不用对折而是把中间折叠成直角三角形是么？

Right-angled arrow shape with adjustable thickness and open or closed end.

直角箭头形状，可调粗细以及端的开放或封闭状态。

Finally, it is concluded that the right-angled roof prism should be used instead of the corner-cube prism.

最后得出可以用直角屋脊棱镜代替立方角锥棱镜的结论。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。