user-avatar
minhang2806
2 năm trước
Cho tam giác ABC, BI và BD lần lượt là các đường phân giác trong và ngoài tại B của tam giác ABC (I,D thuộc AC).Từ I kẻ đường thẳng song song với BC cắt AB tại M a) chứng minh MB=MI b) tính AB biết MI=2cm và BC=3cm c) tính diện tích tam giác ABC biết diện tích tam giác BAD=40cm2
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 13. Nam: How about organizing a Clean Day for our school? Huong: _________. A: Good idea! How should we start? B: No. I had no idea about that. C: No problem. We can do. D: Oh yeah! I can’t believe that. Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. The Earth Day comes from the idea of a former US politician Gaylord Nelson. He was worried about the world pollution, and the health of plants and animals. In 1969, he decided that the world should have a special day to teach people about how to make environment better. His idea became popular and on 22 April 1970 the first Earth Day was celebrated. Since then, environmentalists have used the day to educate people about their roles in protecting our planet. Earth Day finally became a global celebration around the world. On this day, people come together to talk about global warming, protecting rare animals and saving energy sources. Question 20: Environmentalists have used the Earth Day to ________. A: ban people from using energy sources B: carry their research C: get people around the world to play together D: educate people about their roles of protecting our planet

Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. The Earth Day comes from the idea of a former US politician Gaylord Nelson. He was worried about the world pollution, and the health of plants and animals. In 1969, he decided that the world should have a special day to teach people about how to make environment better. His idea became popular and on 22 April 1970 the first Earth Day was celebrated. Since then, environmentalists have used the day to educate people about their roles in protecting our planet. Earth Day finally became a global celebration around the world. On this day, people come together to talk about global warming, protecting rare animals and saving energy sources. Question 19: The word “their” in the second paragraph refers to ______. A: politicians’ B: people’s C: Dr. Nelson’s D: environmentalists’ 8 Choose the word whose stressed pattern is pronounced differently from the others. A: effect B: litter C: affect D: pollute 9 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions. The Earth Day comes from the idea of a former US politician Gaylord Nelson. He was worried about the world pollution, and the health of plants and animals. In 1969, he decided that the world should have a special day to teach people about how to make environment better. His idea became popular and on 22 April 1970 the first Earth Day was celebrated. Since then, environmentalists have used the day to educate people about their roles in protecting our planet. Earth Day finally became a global celebration around the world. On this day, people come together to talk about global warming, protecting rare animals and saving energy sources. Question 17: The Earth Day was first celebrated in ______. A: before 1969 B: 1969 C: 2015 D: 1970

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