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file:///page5image33992 一个钝角三角形 ABC,图见附件,CD 是 AB 边的高,CD 长 2,问 AB 长多少?1. AC 长 4,
file:///page5image34520
2. 三角形 ABC 是等腰三角形,C,
我就是好奇,这图如果不是原题就有的,那cd也可能是长边的高
如果图就是如此可以把它当作额外的条件吗?看了og的解释也不是很明白,毕竟320里这是个很重要的条件
[size=12.000000pt]Figures: [size=12.000000pt]A figure accompanying a problem solving question is intended to provide informationuseful in solving the problem. Figures are drawn as accurately as possible. Exceptions will be clearlynoted. Lines shown [size=11.000000pt]as [size=12.000000pt]straight are straight, and lines that appear jagged are also straight. Thepositions of points, angles, regions, etc., exist in the order shown, and angle measures are greaterthan zero. All figures lie in a plane unless otherwise indicated.
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