Contact us
Choose a category below so we can get back to you as quickly as possible.
證:因為:四邊形ABCD中,AB平行CD,AB=CD所以:四邊形ABCD為平行四邊形, 又因為:AC平分∠BAD所以:∠BAC=∠CAB=∠ACD所以:AD=CD 所以:四邊形ABCD是菱形
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.