【例3】把三角形ABC分成甲、乙、丙三部分,使甲的面积是乙的面积的3倍,丙的面积是乙的面积的4倍。【思考与解答】要想使三角形甲的面积是三角形乙的面积的3倍,可以使这两个三角形的高相等,而三角形甲的底是三角形乙的底的3倍;同样,可以使三角形丙的高和三角形乙的高相等,而三角形丙的底是三角形乙的底的4 [Example 3] The triangle ABC divided into A, B, C three parts, so that A area is 3 times the area of ​​B, C area is B area 4 times. [Thinking and Answers] To make the triangle A area is 3 times the area of ​​the triangle B, you can make these two triangles high equal, and the bottom of the triangle A is 3 times the bottom of the triangle B; the same, you can make the triangle The height of C is equal to the height of triangle B, while the bottom of triangle C is the bottom of triangle B 4