圆的面积练习题快点!我要的最好是英语的,一定要附图,越多越好!O(∩∩)O谢谢 英语
网友回答
【答案】 Round o1, o2 intersect at A, B, circle over circle o1 o2 center.
(1) as shown in Figure I. A do over one diameter circle o ac, cb and extending the circle with o2 in d, with do1, confirmation, do1 perpendicular to the ac;
(2) Figure II through a circle made of a non-o1 diameter strings ac, cb and extending the circle with o2 at the point d, the do1 and ac still vertical it? Please justify your conclusion.