3.One side of a triangle has length 8 and a second side has length 5.Which of the following could be the area of the triangle?I 24II 20III 5A.I only B.II only C.III only D.II and III only E.I,II and III
问题描述：
3.One side of a triangle has length 8 and a second side has length 5.Which of the following could be the area of the triangle?
I 24
II 20
III 5
A.I only
B.II only
C.III only
D.II and III only
E.I,II and III
答
C
答
D，20是以5,8为直角边的直角三角形，5是高为2 的钝角三角形
答
这个题目是说,已知一个三角形有两边分别长8和5,问面积可能是下面的哪种? 因为题目中未解释这个三角形的形状,所以,第三边可以是大于3小于13的任意长度. 如果以长度5的边为底边,其一端为圆心,长度8的边为半径做...