Draw the triangle ABC. assuming the angle A = 57
. angle B by 63 degrees. calculated angle C
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
ta có: B^+5=1,5A^\(\Leftrightarrow\)B^=1,5A^-5;C^+5=2,5A^\(\Leftrightarrow\)C^=2,5A^-5
mà tổng số đo của một tam giác : A^+B^+C^=180
\(\Leftrightarrow\)A^+(1,5A^-5)+(2,5A^-5)=180
\(\Leftrightarrow\)5A^-10=180
\(\Leftrightarrow\)5A^=190\(\Rightarrow\)A^=380
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
In triangle ABC, the measure of angle B is less than 1.5 times the measure of angle A and the measure of angle C is
less than 2.5 times the measure of angle A. What is the measure of angle A in degrees?
Answer: The measure of angle A is
Để tui dịch bài này cho :
Trong tam giác ABC, số đo góc B nhỏ hơn 1.5 lần số đo góc A là và số đo góc C nhỏ hơn 2.5 lần số đo góc A là
. Tính số đo góc A
Cách làm:
Đặt số đo góc A là x có:
x + (1.5x - 5) + (2.5x - 5) = 180
5x - 10 = 180
5(x - 2) = 180
x - 2 = 36
x = 38
Vậy góc A = 38 độ
In triangle ABC, BC=AC and BCA=900. D and E are points on AC and AB respectively such that AD=AE and 2CD =BE.Let P be the point of intersection of BD with the bisector of angle CAB. What is the angle PCB in degrees?
In triangle ABC, BC=AC and BCA=900. D and E are points on AC and AB respectively such that AD=AE and 2CD =BE.Let P be the point of intersection of BD with the bisector of angle CAB. What is the angle PCB in degrees?
Compute the vertex angle of an isosceles triangle given that the base angle ia equal to 40o
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
Given two adjacent angles AOB and BOC. The sum of measure of them is equal to 160o and the measure of angle AOB is equal to 7 times the measure of angle BOC
a)Find the measure of each angle
b)Inside angle AOC, draw ray OD such that angle COD=90o. Prove that OD is the bisector of angle BOA.
c)Draw the opposite ray OC' of ray OC. Find the measure of 2 angles AOC and BOC' then compare them
Bạn ấy nói là:
Cho hai góc kề AOB và BOC. Tổng số biện pháp của họ là bằng 160o và là thước đo của góc AOB bằng 7 lần so với thước đo của góc BOC
a) Tìm các số đo mỗi góc
b) Bên trong AOC góc, vẽ tia OD sao cho góc COD = 90o. Chứng minh rằng OD là phân giác của góc BOA.
c) Vẽ OC ray đối diện 'của tia OC. Tìm các biện pháp của 2 góc AOC và BOC 'sau đó so sánh chúng