The meansures of angles in a triangle are ( x + 22 )º ,( 3x + 6)º ,( 5x - 10)º
The measure of the greatest angle is ...º
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In triangle mnp, an exterior angle at p is represented by ( 21x + 83 )º .if the two non - adjacent interior angles are represent by ( 9x + 35 )º and ( 10x + 50 )º ,find the value of x
In triangle MNP, an exterior angle at P is represented by ( 21x + 83 )º .If the two non - adjacent interior angles are represent by ( 9x + 35 )º and ( 10x + 50 )º ,find the value of x.
( Các bạn nhớ ghi đề nói gì và giải thích làm sao ra kết quả đó nha)
If 2 angles are consecutive interior angles of the parallel lines and the measure of one is(4x-2)o and the other is (5x-7)o.The measure of the first angle is...o.
If 2 angels are consecutive interior angles of the parallel lines and the measure of one is (4x - 2) and the other is (5x - 7). Find the measure of the first angle
Because 2 angles are consecutive interior angles of the parallel lines, so (4x - 2) + (5x - 7) =180\(^o\)
\(\Rightarrow9x-9=180^o\)
\(\Rightarrow9x=189^o\)
\(\Rightarrow x=21^o\)
Therefore, the measure of the first angle is \(4\cdot21-2=82^o\)
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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
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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
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Angles G and H are complementary. If G = 3x + 6 and H =2x - 11, what is the measure of angle H?
tacó: G + H = 90 (1)
G= 3x+6 (2) H= 2x-11 (3)
Thay (2), (3) vào (1) ta được:
3x+ 6 + 2x- 11 = 90 (=) 5x - 5 = 90 =) x= 19
Vậy G= 19*3+6 = 63 và H =19* 2- 11 = 27.
Chúc bạn học tốt. ^.^
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