Question

giúp mk vs

 

Answer 1

Taco

\(\dfrac{\text{∠}A}{4}=\dfrac{\text{∠}B}{3}=\dfrac{\text{∠}C}{2}=\text{∠}D\)

Áp dugj dãy tỉ số = nhau ta cs \(\dfrac{\text{∠}A}{4}=\dfrac{\text{∠}B}{3}=\dfrac{\text{∠}C}{2}=\text{∠}D=\dfrac{\text{∠}A+\text{∠}B+\text{∠}C+\text{∠}D}{4+3+2+1}\)

=\(\dfrac{360}{10}=36\)

\(=>∠A=144^o ∠B=108^o ∠C=72^o ∠D=36^o\)