全等三角形的性質(zhì)與判定(SSS、SAS、ASA、AAS)練習(xí)題

1、精選優(yōu)質(zhì)文檔-傾情為你奉上全等三角形的性質(zhì)與判定（SSS、SAS、ASA、AAS）練習(xí)題1. 如圖，在ABC中，A=90，D、E分別是AC、BC上的點(diǎn)，若ADBEDBEDC，則C= 2. 如圖，把ABC繞點(diǎn)C順時(shí)針旋轉(zhuǎn)35，得到ABC，AB交AC于點(diǎn)D，若ADC=90，則A= 1題圖 2題圖 3題圖 4題圖3. 如圖，AOB中，B=30，將AOB繞點(diǎn)O順時(shí)針旋轉(zhuǎn)52，得到AOB，邊AB與邊OB交于點(diǎn)C（A不在OB上），則ACO= 4. 如圖，ABCADE，BC的延長線過點(diǎn)E，ACB=AED=105，CAD=10，B=50，則DEF= 5. 如圖，RtABC中，BAC=90，AB=AC，分別過點(diǎn)

2、B、C作過點(diǎn)A的垂線BC、CE，垂足分別為D、E，若BD=3，CE=2，求DE的長.6. 如圖，AD是ABC的角平分線，DEAB，DFAC，垂足分別是E、F，連接EF，交AD于G，試判斷AD與EF的關(guān)系，并證明你的結(jié)論。7. 如圖所示，在ABC中，AD為BAC的角平分線，DEAB于E，DFAC于F，ABC的面積是28cm2,AB=20cm，AC=8cm，求DE的長。8. 如圖，AD=BD，ADBC于D，BEAC于E，AD與BE相交于點(diǎn)H，則BH與AC相等嗎？為什么？9. 已知：BD、CE是ABC的高，點(diǎn)F在BD上，BF=AC，點(diǎn)G在CE的延長線上，CG=AB，求證：AGAF10. 如圖：在AB

3、C中，BE、CF分別是AC、AB兩邊上的高，在BE上截取BD=AC，在CF的延長線上截取CG=AB，連結(jié)AD、AG.試判斷AD與AG的關(guān)系如何？并證明之.11. 已知，如圖：AB=AE，B=E，BAC=EAD，CAF=DAF，求證：AFCD12. 已知：B=E,且AB=AE。求證：OD=OC13. 已知：3=4, AEBC于點(diǎn)D.求證：1=214. 已知：3=4, 1=2，且T,U,S三點(diǎn)共線。求證：RS=SE15. 已知：AD/BC,FC/AE,且FC=AE。求證：AB=CD16. 已知：AE/DF且，AE=FD,求證：G是BC中點(diǎn)17. 已知：AE/CF,AD/BC且DF=BE求證：AB=

4、CD18. 如圖，AD=BC且AD/BC，G是BD的中點(diǎn)。求證：AE=FC19. 已知：ED/BF,AB/CD,點(diǎn)G是BD的中點(diǎn).求證：EM=FN20如圖，已知ABCD，O是ACD與BAC的平分線的交點(diǎn)，OEAC 于點(diǎn)E，且OE=2，則AB與CD之間的距離是多少？21如圖，過線段AB的兩個(gè)端點(diǎn)作射線AM、BN，使AMBN，MAB、NBA的平分線AE、BE交于點(diǎn)E.（1）求AEB是多少度？（2）過點(diǎn)E作一直線交AM于D，交BN于C，觀察線段DE、CE，你有何發(fā)現(xiàn)？并證明.（3）無論DC的兩端點(diǎn)在AM、BN如何移動(dòng)，只要DC經(jīng)過點(diǎn)E，AD+BC=AB；AD+BC=CD誰成立？并說明理由。When

5、you are old and grey and full of sleep,And nodding by the fire, take down this book,And slowly read, and dream of the soft lookYour eyes had once, and of their shadows deep;How many loved your moments of glad grace,And loved your beauty with love false or true,But one man loved the pilgrim soul in y

6、ou,And loved the sorrows of your changing face;And bending down beside the glowing bars,Murmur, a little sadly, how love fledAnd paced upon the mountains overheadAnd hid his face amid a crowd of stars.The furthest distance in the worldIs not between life and deathBut when I stand in front of youYet

7、you dont know thatI love you.The furthest distance in the worldIs not when I stand in front of youYet you cant see my loveBut when undoubtedly knowing the love from bothYet cannot be together.The furthest distance in the worldIs not being apart while being in loveBut when I plainly cannot resist the yearningYet pretending you have never been in my heart.The furthest distance in the worldIs not strugg