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It is known that adae is the middle line and height of triangle ABC respectively. The perimeter of triangle ABC is 3 cm larger than that of triangle ACD, and ab = 3 cm Ask for the length of AC, Calculate the area relationship between △ abd and △ ACD
1. Perimeter abd = AB + AD + BC / 2, perimeter ACD = AC + AD + BC / 2, the difference between the two = AB-AC = 2
2. Area is equal, area abd = (BC / 2 * AE) / 2, area ACD = (BC / 2 * AE) / 2 are equal
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