Vua

Câu 54: Cho tam giác ABC nhọn (AB<AC) nội tiếp d9uuong72 tròn (O;R), có đường cao AH. Từ H vẽ các đường thẳng vuôn góc với cạnh AB, AC lần lượt tại E, F. a. Chứng minh rằng 4 điểm A, E, H, G cùng thuộc 1 đường tròn. Xác định tâm của đường tròn đó.

b. Chứng minh góc AEF = góc ACB = góc AHF 

c. Giả sử AH=R. Chứng minh OF=FA, từ đó suy ra OA vuông góc với EF.

I want Joe Biden to play to win, and when you look at this voting base, who are the people who resurrected your campaign?

"I think people mean different things," Pelosi responded. "Of course, public safety is our first responsibility. We have to keep the American people safe; but we want to do it in a way that keeps everyone safe. And there are many ways to do that. Does it mean police officers should be social workers? Does it mean they should be referees in family disputes, and the rest? No, maybe we can distribute some resources in a way that really meet the safety needs of the American people."

And it’s also worth noting that the CDC has said that the coronavirus affects communities of color worse. Doesn’t this white-only-mandate seem to contradict the science?