Làm ơn dịch hộ mk 2 câu này nhé:
Each side intersects exactly two other sides at their endpoints
The term polygon will be used to mean a convex polygon in which each interior angle há a measure of less than 1800
Dịch theo ngôn ngữ toán học nhé
Dịch hộ mk câu này theo ngôn ngữ Toán học nhé:
The term polygon will be used to mean a convex polygon , a polygon in which each interior angle has a measure of less than 1800
Mn giải và dịch dùm bài này cái :
If the sum of al interior angles in a convex polygon is 1080 degrees, then this polygon has ........... diagonals.
tks mn
em chả hiểu gì cả, nhung đề bài đây
nếu tổng của tất cả các góc trong 1 đa giác lồi là 1080 độ . vậy đa giác có bao nhiêu đường chéo??????????
4 points A,B,C and D are consecutive vertices of a regular polygon with 20 sides. Find the measure of ACD
Said quadrangle ABCD for the measurement of the angle A; B; C; D proportional voi5; 8; 13va 10.A / Count measure the angles of a quadrilateral ABCDb / Extend sides AB and DC intersect at E, which lasted two sides AD and BC in F. Two-rays catnhau sense of angles AED and corner cutting AFB O. Separate each corner giaccua AFB cutting edge CD and AB at M and N. Prove cuadoan MN O is the midpoint.
mk ko hỉu hết mấy từ tiếng anh này nên ....... bó tay !!!
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Said quadrangle ABCD for the measurement of the angle A; B; C; D proportional voi5; 8; 13va 10.A / Count measure the angles of a quadrilateral ABCDb / Extend sides AB and DC intersect at E, which lasted two sides AD and BC in F. Two-rays catnhau sense of angles AED and corner cutting AFB O. Separate each corner giaccua AFB cutting edge CD and AB at M and N. Prove cuadoan MN O is the midpoint.
Said quadrangle ABCD for the measurement of the angle A; B; C; D proportional voi5; 8; 13va 10.A / Count measure the angles of a quadrilateral ABCDb / Extend sides AB and DC intersect at E, which lasted two sides AD and BC in F. Two-rays catnhau sense of angles AED and corner cutting AFB O. Separate each corner giaccua AFB cutting edge CD and AB at M and N. Prove cuadoan MN O is the midpoint.
Nói ABCD Tứ giác cho việc đo các góc A; B; C; D tỉ lệ voi5; số 8; 13va 10.A / Đếm đo các góc của một tứ giác ABCDb / Mở rộng bên AB và DC cắt nhau ở E, kéo dài hai bên AD và BC ở F. Hai tia catnhau cảm giác của góc AED và góc cắt AFB O. Tách mỗi góc giaccua AFB cắt cạnh CD và AB tại M và N. Chứng minh O là trung điểm của MN
The word "telephone" means hearing the sounds produced at a distance, just as we see distant objects through a "telescope" or we see things happening miles away through "television". The television was invented more thanone hundred years ago by Alexander Gragam Bell, an American. It is now very extensively used everywhere. In Vietnam, most of the people have their own telephones in their homes. It makes us possible to talk to our friends far away without all they way to their homes.
In actually working it appears to be simple. It has a transmitter into which you speak and a receiver at which you hear; and these two are now combined in the same small instrument, one at each end. The two persons who want to speak have each an instrument. There is a connecting write andelectric battery by the side of each, or there is a common connecting station. it is the electric current enables the sound vibrations to be reproduced at the other end, and the person at the end heara the talk of his friend.
Its working is marvelous, though simple. Two persons can now carry on a conversation with each other while both are lounging on their easy chairs. There is thus no need now to leave your house to talk to a friend on any business. It saves time, trouble and expense.
*Question:
1. What does the work "telephone" mean?
=>..............................................................
2. Who invented the telephone?
=>..............................................................
3. When was the telephone invented?
=>..............................................................
4. Why do they like using the telephone?
=>..............................................................
5. So most of the Vietnamese have their own telephone in their homes?
=>..............................................................
1. The word "telephone" means hearing the sounds produced at a distance
2. By Alexander Gragam Bell
3. More thanone hundred years ago
4. Because it makes us possible to talk to our friends far away without all they way to their homes.
5. Yes they do
Let ABC be a triangle with AB = 3cm, AC = 7cm. The internal bisector of the angle BAC intersects BC at D. The line passing through D and parallel to AC cuts AB at E. Find the measure of DE.
Answer: DE = ..........cm.
Write your answer by fraction in simplest form
ta có:
\(\frac{BD}{DC}=\frac{AB}{AC}=\frac{3}{7}\)( do AD là tia phân giác của \(\widehat{BAC}\))
\(\Rightarrow\frac{BD}{BC}=\frac{3}{11}\)
Ta có:
\(\frac{ED}{AC}=\frac{BD}{BC}=\frac{3}{11}\Rightarrow ED=\frac{3AC}{11}=\frac{3.7}{11}=\frac{21}{11}\)
Let ABC be a triangle with AB = 3cm, AC = 7cm. The internal bisector of the angle BAC intersects BC at D. The line passing through D and parallel to AC cuts AB at E. Find the measure of DE. Answer: DE = ..........cm.