subject
Mathematics, 22.08.2021 14:00 morgannwaldrupp

Cho tam giác abc cân tại a có các trung tuyến bd, ce. trên bc lấy các điểm m, n thỏa bmmn= nc. gọi i là giao điểm của am và bd, k là giao điểm của an và ce. chứng minh rằng: a) am // nd và i là trung điểm của đoạn thẳng bd. b) ik // bc và ik =(bc-de): 2 • tứ giác nmik là hình thang cân. hãy giải thật chi tiết giúp tôi

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 15:30
After being rearranged and simplified, which of the following equations could be solved using the quadratic formula? check all that apply. a. 9% + 3x2 = 14 + x-1 b. -x+ + 4x + 7 = -32-9 c. 5x + 4 = 3x4 - 2 d. 2x2 + x2 + x = 30
Answers: 1
question
Mathematics, 21.06.2019 20:00
If cos(2x) = tan^2(y), show that cos(2y) = tan^2(x).
Answers: 3
question
Mathematics, 21.06.2019 21:00
Isabel graphed the following system of equations. 2x – y = 6 y = -3x + 4 she came up with the solution (2,-2). what were the 3 steps she did to get that solution? (make sure they are in the correct order)
Answers: 2
question
Mathematics, 22.06.2019 05:00
Mary and roberto bought identical backpacks at different stores. mary's backpack originally cost $65 and was discounted 25%. roberto's backpack originally cost $75 and was on sale for 30% off on the original price. which backpack was the better buy?
Answers: 1
You know the right answer?
Cho tam giác abc cân tại a có các trung tuyến bd, ce. trên bc lấy các điểm m, n thỏa bmmn= nc. gọi i...
Questions
question
Health, 11.10.2020 20:01
question
Mathematics, 11.10.2020 20:01
question
Mathematics, 11.10.2020 20:01
question
English, 11.10.2020 20:01
question
Mathematics, 11.10.2020 20:01
Questions on the website: 13722362