Contact us
Choose a category below so we can get back to you as quickly as possible.
啊,第一句寫錯了哦\x0d作DE⊥AB,垂足為E\x0d因為AD平分∠BAC,\x0d所以∠BAD=∠CAD\x0d又因為∠C=∠AED=90度,AD=AD\x0d所以△ADE≌△ADC(AAS)\x0d所以CD=DE,AC=AE\x0d因為△ABC是等腰直角三角形,\ x0d所以∠B…
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.