2010ʦмκϰ⼰𰸣

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1.𰸡ABC
ͶʵݲͬΪ(1)̶ʲͶ;(2)ʲͶ;(3)ʲͶ;(4)ʲͶ;(5)زͶ;(6)м֤ȯͶ;(7)ڻȨͶ;(8)Ͷ;(9)Ͷʵȶʽ
2.𰸡ABCD
ĿͶʵĽǶȿԭʼͶ(ֳƳʼͶ)ҵΪʹĿȫﵽչӪͶȫʵʽ𣬰ͶʺʽͶݡͶʾ̶ʲͶʣʲͶʺʲͶݡ
3.𰸡ACD
̶ʲͶĿ̶ֽʲͶʣӪɱӵĸ˰
4.𰸡AC
ĿԭʼͶʰڵĹ̶ʲͶʡʲͶʡʲͶʺʽͶʣĿڵȫԭʼͶ=210+15+20=245(Ԫ);ĿĽΪ2꣬ӪΪ5꣬Ϊ7ꡣսĻն̶ʲֵպ͵渶ʽգ޷֪սĻնΪ12Ԫ
5.𰸡ABCD
ӪɱֳƸֵӪ˳ɱ(Ƹֳɱ)ָӪΪӪʵʽ֧ijɱáӪɱ͵ĿͶӪڶҪҪֽʷ޹ءĿijľӪɱ(1)⹺ԭȼϺͶ;(2)깤ʼ;(3);(4);иõáúӪҵп۳۾ɷѡ̯ѡѡʼԺʣಿ֡
6.𰸡ABCD
ҵͶĿӪֽĿͨӪɱӪҵ˰𼰸ӡάӪͶʺ͵˰Ĺ㡣
7.𰸡AD
ȷĿֽʱվҵͶߵϣȫͶʵ˶ʽͽʽȾʽֽʹڽʽҲΪʽԴADĿͶʵֽ
8.𰸡AB
ָʲͬɷΪһΧԽԽõָԽСԽõķָࡣ
9.𰸡CD
ֵԭʼͶͬĿȵĶ෽ȽϾߡ
ͶڲʷԭʼͶʲͬĿͬĶ෽ȽϾߡԭʼͶʲͬԲþֵ,ĿڲͬҲòͶڲʷ
10.𰸡ACD
ЩͶʾָֻͶʻΪָ꣬ԽСԽãΪָ꣬ԽԽá
11.𰸡AB
̬ͶʻںͶʹͬȱ(1)ûпʽʱֵ;(2)ȷӦͶʷʽͬĿӰ졣
12.𰸡BC
þֵֵʡָڲָͬһĿۣóȫͬĽ̬ۡͶʻ(Ҫָ)Ͷ(ָ)۽뾻ֵ۽ۿܻᷢìܡ
13.𰸡BD
ڲָĿͶʵʿﵽʡʵϣʹĿľֵʱʡ
14.𰸡AB
ֱͶָʽֱͶͶĿγʵʲ߹ҵʲһͶʡծȯ͹ƱڼͶʡ
15.𰸡ACD
ֽӪҵ룬룬սһλյʽ