三角形

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。

In the figure, ABC is right-angled at B and ACDE is a

图中，ABC 是直角三角形，B是直角，而ACDE 是正方

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？

Given the lengths of the two sides of a right-angled triangle, wecan 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。

Look at Picture 3.4—2. Compare the area of Square ABCD with the sum of the areas of four same right-angled triangles , and what inequality can you have?

阅读课本 P110，比较图3.4－2中正方形 ABCD 的面积与4个全等的直角三角形的面积之和的大小，你能得到怎样的不等式？

A step in a straight stairway.vertical tie post in a roof truss.

支持屋顶的三角形桁架中平行的直柱。

Vertical tie post in a roof truss .

支持屋顶的三角形桁架中平行的直柱。

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。