Question

如圖是兩個(gè)相似四邊形，已知數(shù)據(jù)如圖所示，則x=    ；y=    ；α=    度．

Answer 1

【答案】分析：根據(jù)相似多邊形的對(duì)應(yīng)邊的比相等及四邊形的內(nèi)角和即可求得．
解答：解：根據(jù)題意得：==．
解得：x=，y=．
∠α=360°-30°-120°-130°=80°．
點(diǎn)評(píng)：本題主要考查了相似多邊形的對(duì)應(yīng)邊的比相等，注意分清對(duì)應(yīng)邊是解決本題的關(guān)鍵．