subject
Mathematics, 25.07.2021 06:00 Disd112984

Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phân giác B, C cắt nhau tại J
a) chứng minh AI vuông góc với DI và BJ vuông góc CJ
b gọi E giao điểm AI và BJ giả sử Ethuộc cạnh CD, chứng minhCD=AD+BC

ansver
Answers: 3

Another question on Mathematics

question
Mathematics, 21.06.2019 15:30
Find the gradient of f(x,y,z)equals=left parenthesis x squared plus y squared plus z squared right parenthesis superscript negative 1 divided by 2 baseline plus ln left parenthesis x right parenthesis x2+y2+z2−1/2+ln(xyz) at the point left parenthesis negative 2 comma 1 comma negative 2 right parenthesis(−2,1,−2).
Answers: 1
question
Mathematics, 21.06.2019 17:30
Can someone me with this problem i don't understand i need
Answers: 2
question
Mathematics, 21.06.2019 17:40
A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2
Answers: 2
question
Mathematics, 21.06.2019 19:30
Koji is installing a rectangular window in an office building. the window is 823 feet wide and 534 feet high. the formula for the area of a rectangle is a=bh. what is the area of the window? enter your answer as a mixed number in simplest form in the box. $$ ft2
Answers: 1
You know the right answer?
Cho hình thang ABCD (AB song song CD; AB>CD) các tia phân giác A và D cắt nhau tại I các tia phâ...
Questions
question
History, 05.12.2021 14:00
question
Mathematics, 05.12.2021 14:00
question
Chemistry, 05.12.2021 14:00
question
Advanced Placement (AP), 05.12.2021 14:00
Questions on the website: 13722365