Choose a category below so we can get back to you as quickly as possible.
In quadrilateral ABCD, ad ∥ BC, in order to judge whether quadrilateral ABCD is parallelogram, it should also satisfy ()
A.∠A+∠C=180°
B.∠B+∠D=180°
C.∠A+∠B=180°
D.∠A+∠D=180°
In quadrilateral ABCD, ad ∥ BC, in order to judge whether quadrilateral ABCD is parallelogram, it should also satisfy ()
A.∠A+∠C=180°
B.∠B+∠D=180°
C.∠A+∠B=180°
D.∠A+∠D=180°
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.