Question

2

-1

1

-2

*

góc B₂ và góc A₁

góc A₄ và góc B₁

góc A₁ và góc B₁

góc A₃ và góc B₃

*

120⁰

105⁰

150⁰

100⁰

*

A

B

C

D

*

BC = HK

BC = GK

AC = KG

AB = GH

*

45

165

120

150

Answer 1

.

Answer 2

x = 3

Answer 3

\(\dfrac{3}{2}-x=-0,5\\ x=2\)

Answer 4

1. A

2. C

3. A

4. B

Answer 5

\(\dfrac{3}{2}-x=\left(-0,5\right)\)

\(\dfrac{3}{2}-x=\left(\dfrac{-1}{2}\right)\)

        \(x\) \(=\left(\dfrac{3}{2}+\dfrac{1}{2}\right)=\dfrac{4}{2}=2\)

\(\text{Đáp án:A.2}\)

2)C.Góc \(\widehat{A_1}\) và\(\widehat{B_1}\)

3)A.120⁰

4)\(B.\dfrac{-5}{m}=\dfrac{7}{n}\)

5)\(D.AB=GH\)

6)\(C.120^0\)