user-avatar
380940846360801
2 năm trước
GIÚP Ạ: 1.12: Cho tứ giác ABCD có B=C=900 a) Tứ giác ABCD là hình gì? b) Tính số đo A và D, biết A=8x+60 và D=3x+90 1.15: Cho tứ giác ABCD có D=2x+90, A=8x-90 và góc ngoài tại đỉnh A là A1=3x-90 a) Tứ giác ABCD là hình gì? Chứng minh? b) Phân giác của góc B và C cắt nhau ở I, cho biết B lớn hơn C 320. Tính các góc của tam giác BIC 1.16: Cho tứ giác EFGH có E=6x-40, H=3x+220, G=5x-140 và F=5x+140 a) Tứ giác EFGH là hình gì? Chứng minh? b) Từ F kẻ đường thẳng song song với EH, cắt GH tại I. Chứng minh EF=HI, EH=FG, EG=HF. 1.21: Hình thang ABCD(AB//CD) có A-D=200 , B=2C. Tính các góc của hình thang. <CẢM ƠN CÁC BẠN>
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Part V. Read the passage and choose the correct answer A, B, C or D for each of the following questions. Write your answers on the answer sheet. A lot of children are picky eaters. For example, they don't like meat, they don’t want any vegetables, and they only want ice cream. Some people never change. Mary is a good example. She’s an adult now, but she’s still a picky eater. She says, “I only eat foods I like.” Mary loves fruit, and she eats some fruit every day, but she doesn’t eat any vegetables. “Don’t even show me lettuce or carrots!” she says. What does she like? “Pizza is my favorite food. I eat pizza at least five times a week. I have it with green peppers and onions, so I eat some vegetables!” What are her other favorite foods? She likes chocolate. She usually has some chocolate several times during the day. Does Mary plan to change her eating habits? “Not if I have a choice,” she says. “So don’t offer me any salad, OK?” 29. The best title of the passage is _________ A. Children's food. B. Picky eaters. C. Children's eating habits D. Children's favorite foods 30. According to the passage, Mary dislikes _________most. A. pizza B. vegetables C. fruit D. meat 31. Which of the following sentences is NOT correct? A. Mary only eats the food she likes. B. Mary doesn’t like vegetables. C. Mary plans to change her eating habits. D. Mary likes fruits, chocolate and pizza. 32. How does Mary feel about salad? A. She likes salad. B. She doesn't like salad. C. She loves salad. D. She thinks it's great. 33. Picky eaters are the people who _________ A. don't like meat B. don't want any vegetables C. only like ice cream D. only eat the foods they like

2018 © Loga - Không Ngừng Sáng Tạo - Bùng Cháy Đam Mê
Loga Team