user-avatar
166980441626258
2 năm trước
Bài 3:Cho tam giác ABC, M thuộc cạnh AB. a) So sánh MC với AM + AC b)Chứng minh: MB + MC < AB + AC Bài 4: Cho tam giác ABC, điểm M bất kỳ nằm trong tam giác. a)So sánh MB + MC với BC b)CMR: 2(MA+MB+MC) > AB+BC +AC
Thích Trả lời Chia sẻ

Các câu hỏi liên quan

65. ................. strength of 70 horses, a forklift toils all day long in a warehouse lifting great weights. a. Because the b. With the c. Some d. The 66. The growth of two-income families in the United States .................. of people moving to a new social class. a. has resulted in millions b. results of millions c. millions of results d. resulting in millions 67. Using a globe can be ................. it is educational. a. enjoyable b. to enjoy as c. as enjoyable d. as enjoyable as 68. Each mediocre book we read means one less great book that we would otherwise have a chance .................. a. to read them b. read c. reading d. to read 69. Most accidents in the home can be prevented by ................. elimination of hazards. a. that b. that the c. there is a d. the 70. ................. problems in sailing in tropical seas is the coral reefs. a. One of the biggest b. The biggest one c. Of the biggest one d. There are the biggest 71. The strongest dump trucks work in rock quarries, ................. tons of rocks and soil at one time. a. that they move b. they move c. where they move d. which they move 72. Alice Freeman, ................. to head Wellesley College at age 27, is one of the youngest college presidents in history. a. who was appointed b. has been appointed c. that is appointed d. is appointed 73. Helen Keller lost both her sight and hearing after a severe illness ................. a. of her age in 19 months b. she was 19 months old c. when she was 19 months old d. when 19 months old she was 74. Because aluminum is lighter and cheaper ............., it is frequently used for high-tension power transmission. a. as copper b. than copper c. for copper d. more copper 75. It is only recently that ballets have been based on themes ............. American life. a. reflecting b. reflects c. is reflecting d. reflected

1. My mother always chooses a favorable time for the important occasion. She is rather__________. (superstition) 2. A lot of people choose a _____________date for occasions such as wedding, funeral and house moving days. (favor) 3. Vietnamese people always remember their____________ because they believe that what they have had nowadays has inherited from their ancestors. (ancestral) 4. As a countries situated in Asia, where many _______________ and legends originate, Vietnam has also kept various superstitious beliefs about daily activities. (mysterious) 5. If this person is rich, prestigious or happy, then the family will have good___________ that year. (unfortunately) 6. As for _____l_______ belief, Vietnamese people think that their ancestors have gone to live in another world. (tradition) 7. Cultural ________ is obvious because each country in the world has various traditions and customs. (diverse) 8. It is believed that there are some _____________ shared by most American. (characterize) 9. Americans value _________and do not like to be dependent on other people. (free) 10. Gender discrimination should be ____________(ELIMINATION) so that everyone has equal opportunities in education.

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